08 Trailer wiring problem

himself · 01-30-2009, 06:46 PM

I was foolish enough to purchase the factory (Part# 08921-04960) trailer wire harness for my truck. It was quite a job getting all the plastic panels etc. off to get under the dash to make the connections. Now I can't seem to find the 'Vehicle Connector (9P)," presumably a 9 pin plug and the "Wire harness (4P) connector." They must be somewhere in that jumble of connectors and wires behind the junction block, which I've lowered. Any suggestions would be most welcome.

Lake Murray Man · 03-15-2009, 07:20 PM

If you have the towing package..... look under the driver side dash to the left on the side wall. It is mounted in place. Mine is white.

chris4x4 · 03-15-2009, 07:46 PM

Its tucked way up there. Just above the junction block.

bryanc · 04-21-2009, 09:24 AM

Quote:

Originally Posted by himself

I was foolish enough to purchase the factory (Part# 08921-04960) trailer wire harness for my truck. It was quite a job getting all the plastic panels etc. off to get under the dash to make the connections. Now I can't seem to find the 'Vehicle Connector (9P)," presumably a 9 pin plug and the "Wire harness (4P) connector." They must be somewhere in that jumble of connectors and wires behind the junction block, which I've lowered. Any suggestions would be most welcome.

I did the same for a 09 and the instructions in the box said Tacoma 2005.
I am looking for the F***ing thing also.

Please help as soon as possible....I need the truck in 3 hours and things are all over the place...Help.

Lake Murray Man · 04-21-2009, 02:13 PM

On my 08 w/ towing pkg I did not have to move or remove anything. Look just above the emergency brake pedal (rubber part). There is a trim piece that extends around to the door opening. Mine was tucked in behind that trim - mine is white.

Hope this is in time and helps!

bryanc · 04-21-2009, 04:38 PM

Hi Lake Murray man.....thanks for the reply....I have a 09 without towing....I do see the white connector that will supply the brake controller stuff in the area you talk about....but .....but I don't see a simple 4 pin connector meant for the lites that is suppose to fit the OEM wiring I purchsaed from Toyota. I will look some more and if no success I will return my OEM and buy a Hoppy as the Towing Bible says to do. I expect no problems with the Tekonsha P3. Thanks Sincerely

bryanc · 04-21-2009, 04:45 PM

Calling...."Himself"......calling "Himself" where are you? come in....
I have the exact same problem as you did....word for word...item for item....and you had 4 months on me to find the solution to the missing connectors.....did you find them...this is hilarious......bryanc and a 09 with missing connectors. Thanks and help.

Lake Murray Man · 04-21-2009, 05:21 PM

Sorry guys ... no experience with non towing package or factory add on wiring.

Lake Murray Man · 04-21-2009, 05:24 PM

I have a P3 controller as well .... no issues pulling (stopping) a 5000 lb camper and gear. Just wish I had a diesel...

bryanc · 04-22-2009, 09:36 AM

09 Access without tow package...wiring problem has been resolved finally. Irish stubborness I guess. I went back under that dash and did find the missing 4pin connector and the white 7 pin connector for the converter was also there. I had mistaken the 7 pin for something to do with the brake controller which is very wrong. So my wiring is almost complete for the lites and now to the controller. Sop thanks for the input. bryanc... an almost happy camper

bryanc · 04-22-2009, 09:49 AM

With regard to your 08 Access wirng problem. As I have posted to you , I was having the same problem, have now found the damn white 4 pin connector. My wiring is now complete. Now to the brake controller which i expect to be easier.....bryanc.

jesse2035 · 06-13-2009, 11:31 PM

I was doing some browsing and found this on Ebay. It is a towing wire harness that connects to your tail lights. Is this the same as what you guys did?

http://cgi.ebay.com/ebaymotors/Toyot...ayphotohosting

bryanc · 06-14-2009, 05:43 AM

Good morning ...jesse2035
I have the Tacoma 09 Access 4cyl, No tow package. It comes only with a 4 pin connector for trailer lites. So I did infact use the over priced Toyota wiring kit for the lites. Brake controller etc was done individually with bought wiring stuff. The Tacoma towing bible explains several ways to do the wiring. So good luck
bryanc

jesse2035 · 06-14-2009, 08:04 AM

bryanc,

I just browsed the towing bible. I was actually a bit confused. I thought the wire harness I mentioned had the brake controller too. After going through the towing bible im pretty sure it is just for lite towing only.

I have an 09 DC Taco without the tow package and like a bunch of other people have now decided to tow.

bryanc · 06-14-2009, 12:50 PM

Hi Jesse2035....
I have just finished the following; hitch installation, lights wiring, P3 controller and trailer brake adjustments, , and a seperate accessories circuit from the battery to the back end. The Brake light switch wire was confusing but is now clear. The blue wire as small as it seems in gauge is the correct wire for the brake controller wiring. All of my effort was in the end worth it. The big benefit is if something goes wrong you know it well enough to fix it yourself. So feel free if you have a question, there are others who also who have been and are very helpful. Good luck, bryanc

Note the brake controller does require a seperate circuit from the battery to the brake controller and hitch connector also. Toyota does not provide that for non tow trucks.

Jlinderj · 10-27-2009, 05:24 PM

I had to give up for the day on the 08921-04960 installation. I read everybody's post, went back, thought I had found the 4-pin connector and it only has 2pins!!! Won't hook up.

Where has everyone else found the 4-pin?

bryanc · 10-27-2009, 06:10 PM

Hi Jlinderj....my 09 Tacoma 4Cylhas the 4 pin connector covered in black tape and bent up in the back of the main cylinder of wires that run vertically in the extreme left side of the foot well, left of steering wheel. It took me 2 days to find it.....not nice....but it was there. Good luck, bryanc

Jlinderj · 10-29-2009, 04:16 PM

I found two multipin connecters and one 2 pin connector. I'll keep looking, but has anyone else found these other things?

bryanc · 10-29-2009, 04:55 PM

Hi....Jlinderj
One of the square multi connectors should be stamped OMB, or OMG...or something like that and I beleive that is the connector for computer verification of function check codes or something....recommended not to touch that. There was another long narrow rectangular connector ...no idea for that also....I just know that if you look closely at the end of the connector from your dealer bought wiring....you should have a small square white connector and if your Taco is like mine....you should find the connector you need as I described on the last reply......behind the large taped round grouping of wires in the extreme corner left side behind the park brake cable........it is not easy to see nor find....that is where mine is.....good luck.....bryanc

Jlinderj · 10-30-2009, 06:45 AM

Thanks Bryan, I'll look again. Just out of curiosity, did you happen to run across this female 2-pin connector that I found where they said the 4-pin should be?

01-30-2009, 06:46 PM	#1
himself Junior Member Joined: Jan 2009, #13125 Location: Wisconsin, U.S.A. Gender: Male Posts: 2 08 Tacoma 2008 Access Cab Manual	08 Trailer wiring problem I was foolish enough to purchase the factory (Part# 08921-04960) trailer wire harness for my truck. It was quite a job getting all the plastic panels etc. off to get under the dash to make the connections. Now I can't seem to find the 'Vehicle Connector (9P)," presumably a 9 pin plug and the "Wire harness (4P) connector." They must be somewhere in that jumble of connectors and wires behind the junction block, which I've lowered. Any suggestions would be most welcome.

04-21-2009, 04:45 PM	#7
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	08 Wiring Problem Calling...."Himself"......calling "Himself" where are you? come in.... I have the exact same problem as you did....word for word...item for item....and you had 4 months on me to find the solution to the missing connectors.....did you find them...this is hilarious......bryanc and a 09 with missing connectors. Thanks and help.

10-27-2009, 05:24 PM	#16
Jlinderj Junior Member Joined: Oct 2009, #25014 Gender: Male Posts: 3	Four pin, Two pin? I had to give up for the day on the 08921-04960 installation. I read everybody's post, went back, thought I had found the 4-pin connector and it only has 2pins!!! Won't hook up. Where has everyone else found the 4-pin?

10-29-2009, 04:16 PM	#18
Jlinderj Junior Member Joined: Oct 2009, #25014 Gender: Male Posts: 3	Reply I found two multipin connecters and one 2 pin connector. I'll keep looking, but has anyone else found these other things?

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03-15-2009, 07:20 PM	#2
Lake Murray Man Junior Member Joined: Mar 2009, #14480 Location: Chapin, SC Gender: Male Posts: 13 Long Bed 4X4 2008 Double Cab Automatic 4.0L K&N Hella Head Lights Pioneer Stero soon - Rear TSB	If you have the towing package..... look under the driver side dash to the left on the side wall. It is mounted in place. Mine is white.

04-21-2009, 02:13 PM	#5
Lake Murray Man Junior Member Joined: Mar 2009, #14480 Location: Chapin, SC Gender: Male Posts: 13 Long Bed 4X4 2008 Double Cab Automatic 4.0L K&N Hella Head Lights Pioneer Stero soon - Rear TSB	On my 08 w/ towing pkg I did not have to move or remove anything. Look just above the emergency brake pedal (rubber part). There is a trim piece that extends around to the door opening. Mine was tucked in behind that trim - mine is white. Hope this is in time and helps!

04-21-2009, 04:38 PM	#6
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	Hi Lake Murray man.....thanks for the reply....I have a 09 without towing....I do see the white connector that will supply the brake controller stuff in the area you talk about....but .....but I don't see a simple 4 pin connector meant for the lites that is suppose to fit the OEM wiring I purchsaed from Toyota. I will look some more and if no success I will return my OEM and buy a Hoppy as the Towing Bible says to do. I expect no problems with the Tekonsha P3. Thanks Sincerely

04-21-2009, 05:21 PM	#8
Lake Murray Man Junior Member Joined: Mar 2009, #14480 Location: Chapin, SC Gender: Male Posts: 13 Long Bed 4X4 2008 Double Cab Automatic 4.0L K&N Hella Head Lights Pioneer Stero soon - Rear TSB	Sorry guys ... no experience with non towing package or factory add on wiring.

04-21-2009, 05:24 PM	#9
Lake Murray Man Junior Member Joined: Mar 2009, #14480 Location: Chapin, SC Gender: Male Posts: 13 Long Bed 4X4 2008 Double Cab Automatic 4.0L K&N Hella Head Lights Pioneer Stero soon - Rear TSB	I have a P3 controller as well .... no issues pulling (stopping) a 5000 lb camper and gear. Just wish I had a diesel...

04-22-2009, 09:36 AM	#10
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	09 Access without tow package...wiring problem has been resolved finally. Irish stubborness I guess. I went back under that dash and did find the missing 4pin connector and the white 7 pin connector for the converter was also there. I had mistaken the 7 pin for something to do with the brake controller which is very wrong. So my wiring is almost complete for the lites and now to the controller. Sop thanks for the input. bryanc... an almost happy camper

04-22-2009, 09:49 AM	#11
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	With regard to your 08 Access wirng problem. As I have posted to you , I was having the same problem, have now found the damn white 4 pin connector. My wiring is now complete. Now to the brake controller which i expect to be easier.....bryanc.

06-13-2009, 11:31 PM	#12
jesse2035 Member Joined: May 2009, #17314 Location: Texas Gender: Male Posts: 49 2009 Tacoma Prerunner Double Cab 2009 Double Cab Automatic	I was doing some browsing and found this on Ebay. It is a towing wire harness that connects to your tail lights. Is this the same as what you guys did? http://cgi.ebay.com/ebaymotors/Toyot...ayphotohosting

06-14-2009, 05:43 AM	#13
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	Good morning ...jesse2035 I have the Tacoma 09 Access 4cyl, No tow package. It comes only with a 4 pin connector for trailer lites. So I did infact use the over priced Toyota wiring kit for the lites. Brake controller etc was done individually with bought wiring stuff. The Tacoma towing bible explains several ways to do the wiring. So good luck bryanc

06-14-2009, 08:04 AM	#14
jesse2035 Member Joined: May 2009, #17314 Location: Texas Gender: Male Posts: 49 2009 Tacoma Prerunner Double Cab 2009 Double Cab Automatic	bryanc, I just browsed the towing bible. I was actually a bit confused. I thought the wire harness I mentioned had the brake controller too. After going through the towing bible im pretty sure it is just for lite towing only. I have an 09 DC Taco without the tow package and like a bunch of other people have now decided to tow.

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06-14-2009, 12:50 PM	#15
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	Hi Jesse2035.... I have just finished the following; hitch installation, lights wiring, P3 controller and trailer brake adjustments, , and a seperate accessories circuit from the battery to the back end. The Brake light switch wire was confusing but is now clear. The blue wire as small as it seems in gauge is the correct wire for the brake controller wiring. All of my effort was in the end worth it. The big benefit is if something goes wrong you know it well enough to fix it yourself. So feel free if you have a question, there are others who also who have been and are very helpful. Good luck, bryanc Note the brake controller does require a seperate circuit from the battery to the brake controller and hitch connector also. Toyota does not provide that for non tow trucks.

10-27-2009, 06:10 PM	#17
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	Hi Jlinderj....my 09 Tacoma 4Cylhas the 4 pin connector covered in black tape and bent up in the back of the main cylinder of wires that run vertically in the extreme left side of the foot well, left of steering wheel. It took me 2 days to find it.....not nice....but it was there. Good luck, bryanc

10-29-2009, 04:55 PM	#19
bryanc Member Joined: Jan 2009, #12645 Location: ottawa ontario canada Gender: Male Posts: 53 09 access 4cyl 2wd 2009 Access Cab Automatic 2.7 4cyl home made diamond tonneau with flip up and canoe racks	Hi....Jlinderj One of the square multi connectors should be stamped OMB, or OMG...or something like that and I beleive that is the connector for computer verification of function check codes or something....recommended not to touch that. There was another long narrow rectangular connector ...no idea for that also....I just know that if you look closely at the end of the connector from your dealer bought wiring....you should have a small square white connector and if your Taco is like mine....you should find the connector you need as I described on the last reply......behind the large taped round grouping of wires in the extreme corner left side behind the park brake cable........it is not easy to see nor find....that is where mine is.....good luck.....bryanc

10-30-2009, 06:45 AM	#20
Jlinderj Junior Member Joined: Oct 2009, #25014 Gender: Male Posts: 3	Thanks Bryan, I'll look again. Just out of curiosity, did you happen to run across this female 2-pin connector that I found where they said the 4-pin should be?