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Trailer wiring question

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 709GADE, Aug 24, 2010.

  1. Aug 24, 2010 at 9:21 AM
    #1
    709GADE

    709GADE [OP] Well-Known Member

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    Toyota aluminium side steps, Toyota door sill protectors Extang trifecta tonneau cover, U-Haul Class 3 hitch, Black Weathertech's, Front mudflaps trimmed 4", OEM Fog Lights, WeatherTech Bug Deflector, 13" Stubby antenna, TRD Skid Plate, ScanGaugeII, Carriage Works Billet Grille, Plasti Dipped overhead temp/compass console, LT265/75/16 Duratrac's LR C
    I have a 2009 Tacoma SR5 without any towing package. I have installed the Toyota wiring harness (08921-04960) which includes relay and fuse (not the hoppy harness) but it is a 4 way flat harness.

    [​IMG]
    My small trailer (~1000 lbs) has an RV 7-way round plug. [​IMG]

    My question is what is the best way to connect my truck and trailer wiring plugs? Is there a converter or something?

    Thanks
     
  2. Aug 24, 2010 at 9:46 AM
    #2
    DonL

    DonL Well-Known Member

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    I believe what you are missing with the four post connection are your electrical connection between truck/trailer and your trailer brake connection. I have the exact opposit problem when I try to pull my boat trailer with a 4 prong recepter and the 7 prong on my Taco. There is an adapter for my problem but you'll have to rewire your setup for a brake controler and electrical connection. You already have tail, brake and turn signal lights with the 4 prong. Do you have a brake controller. Don
     
  3. Aug 24, 2010 at 9:46 AM
    #3
    18seeds

    18seeds Well-Known Member

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    OT but what camper is that. I like how small it is
     
  4. Aug 24, 2010 at 9:49 AM
    #4
    8th sin

    8th sin Swollen Member

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    1000lbs shouldn't need a brake controller. Pick up a generic 7 pin plug and splice the wires from the toyota harness to it for the lights. Then run a decent guage wire from the battery and a ground so you can have 12v to power/charge the trailer.

    make sure everything i weather sealed, and i'd recommend soldering the connections if you can.
     
  5. Aug 24, 2010 at 9:53 AM
    #5
    1bad10tacoma

    1bad10tacoma Well-Known Member

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    I too like that camper,what is it?
     
  6. Aug 24, 2010 at 10:16 AM
    #6
    709GADE

    709GADE [OP] Well-Known Member

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    Toyota aluminium side steps, Toyota door sill protectors Extang trifecta tonneau cover, U-Haul Class 3 hitch, Black Weathertech's, Front mudflaps trimmed 4", OEM Fog Lights, WeatherTech Bug Deflector, 13" Stubby antenna, TRD Skid Plate, ScanGaugeII, Carriage Works Billet Grille, Plasti Dipped overhead temp/compass console, LT265/75/16 Duratrac's LR C
    Thanks for info info, the trailer is made in Canada by Taylor Coach

    http://www.taylorcoach.com/

    I do not have a brake controller on my truck, but the trailer does have electric brakes.
     
  7. Aug 24, 2010 at 10:22 AM
    #7
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

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    And put at least an in-line fuse between your battery and the trailer.
     
  8. Aug 24, 2010 at 10:32 AM
    #8
    709GADE

    709GADE [OP] Well-Known Member

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    Toyota aluminium side steps, Toyota door sill protectors Extang trifecta tonneau cover, U-Haul Class 3 hitch, Black Weathertech's, Front mudflaps trimmed 4", OEM Fog Lights, WeatherTech Bug Deflector, 13" Stubby antenna, TRD Skid Plate, ScanGaugeII, Carriage Works Billet Grille, Plasti Dipped overhead temp/compass console, LT265/75/16 Duratrac's LR C
    What amp fuse would you recommend?
     
  9. Aug 24, 2010 at 11:54 AM
    #9
    8th sin

    8th sin Swollen Member

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    Depends on how many watts of power your trailer needs: Amps = Watts/Volts (12v in this case) round up a bit to save yourself headaches, but not too much. The gauge of wiring you use to provide 12v to the trailer will also be determined by your amperage.

    I'm not sure what the fuse is for the OEM tow package (I would not exceed that), and it's raining so I'll let someone else chime in with that.
     
  10. Aug 24, 2010 at 11:57 AM
    #10
    Oskie_78

    Oskie_78 Everything's BIGGER in TX!

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    sweet little camper!
     
  11. Aug 24, 2010 at 12:34 PM
    #11
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

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    I don't have an OEM tow package otherwise I'd check the fuse size for you. If you look in your owner's manual, it'll probably have the fuse listed for the tow package equipped trucks. I'd use the same amp fuse for your set-up. If you want to get fancy, you can put a shut off switch in the cab somewhere also or a relay to another fuse so that circut dies when you shut the truck off.
     
  12. Aug 30, 2010 at 10:09 AM
    #12
    709GADE

    709GADE [OP] Well-Known Member

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    Toyota aluminium side steps, Toyota door sill protectors Extang trifecta tonneau cover, U-Haul Class 3 hitch, Black Weathertech's, Front mudflaps trimmed 4", OEM Fog Lights, WeatherTech Bug Deflector, 13" Stubby antenna, TRD Skid Plate, ScanGaugeII, Carriage Works Billet Grille, Plasti Dipped overhead temp/compass console, LT265/75/16 Duratrac's LR C
    Would this converter do it, anybody have any experience with this?
    [​IMG]

    Trailer is only 1000 lbs, so no need for electric brakes and I have no need for battery charging. I guess I would just ignore those wires on the converter (i.e., black, yellow, and blue) white is the ground. I am thinking I can just plug the 4 flat into the 4 flat on the truck and then use the white wire to ground to the truck, any thoughts...???
     
  13. Aug 30, 2010 at 10:44 AM
    #13
    Scooter

    Scooter Canadian Member

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    I would check into the electrick brakes. True, trailers under 1000 lbs do not require electric brakes, but as soon as you put anything into a 1000 lb trailer, it is over 1000 lbs. Better safe than sorry. You can get a brake controller for $70 CAD, and with a bit of time wiring, it is good insurance for safety.

    I love your trailer. I have a 16' Fun Finder by Cruiser RV. At 1980 lbs, It's not nearly as light as yours. I think I would have seriously looked into a Taylor if i'd known about it when I bought mine. Too bad Taylor doesn't make them with a Fiberglas exterior. I really appreciate the Fiberglas exterior when it comes to cleaning it, and its resistance to hail damage. I guess aluminum siding is lighter.
     
  14. Aug 30, 2010 at 3:55 PM
    #14
    bigmooze

    bigmooze Well-Known Member

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    ^^^ I used this. (Pricess Auto, right?)

    My 4-pin connector was all corroded out so I decided to upgrade. My truck (like yours) was purchased in Canada, and is rated for 5000 lb towing. Comes with tranny cooler, larger alternator etc. I have an e-mail from Toyota to back this.

    I cut off the damaged 4-pin and soldered the wires to the corresponding wires on the new harness. Used heat shrink tubing with adhesive to help keep the water out, then wire loomed everything. I connected the ground (white wire above) to the truck's frame.

    I ran conductors (10 AWG) from the engine bay (I have a Blue Sea Systems fuse panel for all my after market electrical accessories) to the back of the truck to service the remainnig pins on the 7-pin. The blue wire is for the trailer brakes. (That's the output of the brake controller).

    Finally, I swapped a case of beer for my buddy's brakes controller (a Reese Brakeman Compact), to finish up the install. I wired a 40A circuit breaker in the supply to the brake controller. Breakers self-reset after cooling down, which removes the need to change fuses if your brakes draw too much current from time to time. That being said, I would want to check the reason for the breaker to keep tripping if that did happen.
     
  15. Aug 30, 2010 at 4:55 PM
    #15
    709GADE

    709GADE [OP] Well-Known Member

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    '09 Toyota Tacoma 4X4 SR5 DC LB - Pyrite Mica
    Toyota aluminium side steps, Toyota door sill protectors Extang trifecta tonneau cover, U-Haul Class 3 hitch, Black Weathertech's, Front mudflaps trimmed 4", OEM Fog Lights, WeatherTech Bug Deflector, 13" Stubby antenna, TRD Skid Plate, ScanGaugeII, Carriage Works Billet Grille, Plasti Dipped overhead temp/compass console, LT265/75/16 Duratrac's LR C
    Thanks for the info bigmooze. I purchased mine @ Action Truck Accessories.
     
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