Wesleyc_08

Can anybody tell me what color wires go to the taillight relay on a 89 toyota pickup? I have some burnt up wires and the spot for my taillight fuse is burnt so I'm trying to tie in to the wires and run a inline fuse

RAD4Runner

Edited:
Sorry, NOT sure if your light circuit is same as on 1986-1989 4Runner with 22RE. (Schematic for that is below)

At the tail light relay:
1) There is the supply wire that will always have 12V as long as your battery is connected. It goes to positive side of contacts and positive of coil.
2) There is the switched-ground wire that gets continuity to ground ONLY if the tail light combo-stalk-switch is in tail light or headlight ON position.
3) Then there is output wire that will get 12V only when there is 12V to wire 1 and ground to wire 2, and relay clicks.



If you do not have a schematic:
Unplug your tail light fuse and relay.
Cycle your tail light switch (Up to tail light on position only) and see which wire gets 12 volt then does not get it as you cycle. That's the wire. Once you've found that, we'll go from there.

Wesleyc_08

without the relay plugged in I wouldn't get 12 volts to the wire going to the taillight I thought?

RAD4Runner

SORRY, my bad. Tail light relay is switched-ground. Pls see edited comment above...

Wesleyc_08

I have that drawing and the issue is having is there is no red wire from prong 3 on the relay to the fuse. I'm not sure if it's a different color or not

wyoming9

iTrader: (1)

Have these lights ever worked ??

Now 88 pick ups have the red wire to the fuse .

Is that wire burned off or is there another color wire in that place ??

Wesleyc_08

I'll have to look again when I get time. Working 12's right now

RAD4Runner

Correct. Voltage goes from battery, to positive side of relay contact to negative side of relay contact (if it's energized), to one side of fuse, to the other side of fuse (if fuse is good), to taillight wiring.

Gotta see whats connected to relay pin3 and where it goes. Also what's connected to the tail light fuse and where it goes.

Not sure if yours has the fancy integration relay module (one more thing to break) or if it's as simple as 1984 to 1988 MoreFunners.

Wesleyc_08

this has turned into a mess. Some rats or something must have got into it at some point. I'm considering just wiring my running lights, tail lights, and headlights to a new switch and just having everything work off of one circuit and just put a inline fuse.

wyoming9

iTrader: (1)

If you do decide to go that route

Make some good notes just what your doing .

In case you have problems down the road you have something to look at

RAD4Runner

Giving up already?
Maybe it's not a ref RED wire on your truck. Maybe ur schematic is different from that of 1988 4Runner 22RE.
Why not trace wire between the relay ans the fuse?

wyoming9

iTrader: (1)

If the rodents have indeed been Chowing down under the dash behind the fuse block.

Sometimes the best call on 4th and inches is to punt

Myself if it is that bad I would be sourcing a Harness Maybe a complete parts vehicle

Wesleyc_08

as bad as it is I think my best option is to build a new control circuit till I can get a wiring harness. I need my truck so I can't wait to find a harness. Give you help me out on what I need to do to tie in my dash and Custer lights into my new relay circuit to have them come on when my lights come on. I want to bypass the dimmer all together

RAD4Runner

We're doing our best to help you properly troubleshoot and restore your truck wiring to robust, stock condition. However, you have not done nor responded to what we had suggested that you look into.
Sorry, I will not help butcher the wiring like many previous owners have done.

Wesleyc_08

i am going to try yalls advice first I'm just preparing a backup plan if that does not work. I don't have time to do what y'all said till I get off of 12's. All I've had time to do is go glance at a few things. So once I get off this turnaround I will follow yalls advice. One issue I found that I don't know what to do about it is the spot for the taillight fuse is burnt up to the point where you can't get a fuse in it. They guy used a paper clip as a fuse and that turned out just as you would imagine. I honestly don't know what he was thinking the way he wired this stuff up

Wesleyc_08

I'm really just want to get it enough to drive and this summer I'm taking a week off to replace the whole wiring harness and other odd and end things. That's why I'm trying to set up a new circuit cause I plan on starting from scratch when I get the supplies and my week off.

wyoming9

iTrader: (1)

About the best advice I can give you is to get a copy of Toyota`s Electrical Wiring Diagrams for the year pick up you have .

While other years might be close one wrong wire can make a big mess

If you were close to me I would be glad to help in person

Wesleyc_08

where can I find one?

wyoming9

iTrader: (1)

You can try Ebay,

Use the Search Engine of your choice what can you lose

86bullet

RAD4Runner ,wondering if your on line here or somewhere else. I have the same problem and YOU seem to be giving the best advice. Ive been reading about Wyoming9,but my problem still exists,but eliminated one or two things now new problem. Anyway,are you here or am I talking to the wind ?