Stage 1 Full Battery Harness Replacement

This is a write up for a complete battery wire harness replacement on a 98-04 3.4 V6 Tacoma with plenty of pictures and advice necessary for the job. This isn't a difficult task, if I were to rate it it's a 2. The battery wires I used is the stage 1 kit from Bama Toy1997 which consists of just the wires, a stage 2 kit consists of a high output alternator and a stage 3 consists of a total primary electrical system upgrade



For more info on the different stages you can get and where to buy them here is his FS page

http://www.tacomaworld.com/forum/ma...coming-2nd-gen-electrical-system-upgrade.html


You will need:

10mm socket

12mm socket

14mm socket

Flat head screw driver

Set of Alan wrenches



Here is the stage 1 battery cables I received in the mail.





Starting with the build you will need to disconnect your old positive and negative terminals from the battery and the ground wire from the fender





Next you will need to slide this cover off that is located on your fuse box to disconnect the other positive wire coming from the main wire loom






Here you can see that I have disconnected the wire from inside the fuse box





You will need to proceed by locating your alternator on the drivers side underneath the valve cover and disconnect the two wires




Right below that locate where your negative battery cable ends at and unscrew the 14mm bolt holding it on, it should be located beneath the oil filter as seen here



After disconnecting those follow the wire loom down under the front of the engine





You will see an ivory colored mounting bracket for the wires that you will need to unhook so you can get the wires out. It looks like this:






After you disconnected it follow the battery cable up the side of the engine block and locate the holding the cable and unbolt it, next to it should be a tiny wire that is also from the loom that you need to disconnect, the bolt should be directly above the CV axle as pictured





When all of that is completed you should be able to rip the whole mess out of the engine bay and throw it away.





If you want to keep the wires together and clean take off all of the wrap around wire loom things and put them back on your new wires to keep them from floating around in the engine bay. It's the black plastic that wraps around the cables and makes it appear fat like in the picture above ^



It started to get dark so I am sorry if things are not clear enough.



Go back to your main fuse box and find the cable that is sticking out of the bottom, it should have been previously connected with your old positive battery cable and pull it inside the fuse box so you can mount it on the bolt




Next in line is the new battery cables starting with the positive battery connection the fattest wire located on the far right (also the longest) will be the cable that goes underneath the engine to the other side. The middle cable will connect with your alternator like so





The third wire on far left that is transparent will be going to your fuse box where we mounted the wire hanging out of the fuse box at. Run the cable up the side where existing wire used to be and place it on bolt





As of what to do with the tiny blue wire running off of your positive cable it is a ground for the voltage meter I coiled it around the transparent cable we just mounted, ran it trough the fuse box and wrapped it around the 10mm bolt on at the stock location





Last but not least your negative battery cable! The small transparent wire connects at the factory ground location on the fender and the other black cable bolts back up underneath the oil filter.





Finished product

 

Whoops. None of the pictures showed up...lol

 

How about now?

 

the link doesn't work either

 

Should be fixed now, tapatalk is being difficult

 

Looks good! I'm glad that you like the kit!

 

Glad to have the kit now and out of the way so I won't have to worry later, my other ones were so terrible it was time for an upgrade anyways

 

Sub'd

 

Nice.

 

OK, I finally have a 2nd gen in the shop so I will be measuring everything out and getting the 2nd gen Stage 1, 2, and 3 designed and ready for sale hopefully within a week.

 

Awesome to hear, have you had anyone get in line for the second gen set yet?

 

Sub'd! Nice write up

 

Not yet, because I haven't been able to see what the costs will be. Once I know the cost, then I can set a fair price. I hope that I can keep it close, if not the same, as the 1st gen kits.

 

Thanks!

 

I think I have my friend sold on a set of 2nd gen when he gets his

 

ok. Well I am still working on it. Thanks!

 

Does the volt meter stay on continuously when the blue ground wire is connected?

 

Yes

 

won't that kill your battery?

 

The draw is so minimal that it would take a month to drain the battery down. It draws about as much power as the radio memory does.