96 taco wiring issues

I have been hacing tailight issues with my truck and have traced the problem to the rear wiring harness. There is wiring that runs under the driver seat and there is a clip connecter that runs from under the rear to the rear... I found that my problem is in that rear section. So my question is that, can I but that rear harness that clips under the driver seat and runs to the tailights or do I need a whole harness?? this will fix a huge headache that I have been having regarding my wiring.. If not, what does a new harness go for.. thanks

you should be able to buy anything for it. i know a new rear harness from the cab back to the lights was 250 bucks for my mazda.

your question is a little hard to understand but if get you correctly...use a multimeter and a piece of wire long enough to reach from your tail light plug to where you found the problem and test the conductivity. When you find one that does not conduct, try to locate the damaged area of the wire, and fix it in a manner that suits the problem (for example, it may be grounding out on the frame, or a wire or connector may be damaged. what should take under an hour for the beginner DIY would save you hundreds of dollars, just be sure to stay at a holiday inn before you attempt any of this.

i did that, and noticed that when I hit the brake my turn signal would go off.. so from that area, back is crossed some where. i did what you said in the front under the dash to fix it from there... its just the rear thats messed up somewhere.

I forgot to look at your profile, I was thinking stock wiring.... I see the flush mounted ones....Who installed those? someone else, I am assuming. You'll most likely find the problem where they cut the wires to hook up the aftermarket tails. Clean that up by either disconnecting all the connections the guy made since they are probably not too good if you are having problems with it. And start over by doing it right with solder, heat shrink tubing, conduit and electrical tape to make sure that stuff dont ever budge. Before you fix the connections, take some jump wires from either your car battery or maybe even a 9v and test each wire to see what light it activates, then lable it. If you have any access to a wiring diagram for the stock harness, it will tell you what each color coded wire does. If not, what you do is while all the wires are disconected (and not touching anything metal to allow them to ground out) activate each switch (ie turn signal, brake, etc) and then take your multimeter and test each of the stock wiring to see wich one is hot with the switch turned on, then label. once you have both sides labelled, make your bullet proof connections and not worry about it ever again.


Curious, before you get into all that jazz, what happens when you put your turn signal on? Hazards? Reverse light? does that do anything?

Dont mean to change the topic but, on your truck did you have to change anything else when you switched to flared fenders? like the turn signal lights or the way the fenders were mounted? or was it just an easy bolt right in swap?

i will try what you said willy but i have a little.. are you local?? i have tried what you said and i have traced the problem to under the seat. thats where its all good and every switch does what its supposed to. as for the fenders, when i bought it they were like that. the wires were just cut or left there..so its kinda wierd... i just want the wiring taken care of,,

lemme check my hanes manual and I'll see if there is anything on wiring