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No tail lights PLEASE HELP

4K views 7 replies 3 participants last post by  Decoy_58 
#1 ·
I have no taillights(running lights) replaced light switch (brand new napa switch) have no power at fuse Have checked all fuseable links. Have checked and verified grounds. Can apply power to taillight wire and they work.The problems are I can not get any power at fuse as I said all fuseable links have been checked and verified good. Would that mean that the fuse block (on fire wall)is bad (if so how does it come out)or have I missed something
Thank all in advance
 
#2 ·
Have checked all fuseable links all verified good (with test light)wiring diagram says that 1of the fuseable links goes to the tail/running light fuse
 
#3 ·
Bump back to top
 
#4 ·
Have you cleaned the connections on the relay on the fire wall..sometimes mud and what not gets up there and things get corroded. I figured you have but just wanted to check. Sometimes it the simple things that drive you crazy.
 
#5 ·
Anyone have any more ideas
 
#6 ·
Have you traced the wire from the fusible link to the firewall? I the link is getting power and the fuse isn't then I woukd think the ssue has to be somewhere in between?
 
#7 ·
I guess it's time to pull out the big guns. I had hoped it might be something simpler, but here is an idea that might help if you have the patients and motivation.

With the key on or off, one of the brake fuse terminals should have power. I don't think the brake pedal needs to be depressed.

On my 1987, I had an issue with one terminal in the fuse panel. It should have had power, but didn't.

Here is what I did.

1)- Disconnect (-) battery terminal.
2)- On the firewall, by the brake booster, disconnect the plug from the back of the fuse panel. (1/4" socket IIRC).
3)- With a long phillips screwdriver, remove the fuse panel from the underdash side of the firewall. (Much easier with drivers door off). When I did mine, my tach and speedo were out and it was easier to see up under the dash, but it isn't really necessary.
4)- Pull the outer fuse panel half away from the inner fuse panelhalf. Look at the two brake terminal wire ends (that the brake fuse plugs into) at where they plug into the outer fuse panel half. If one is broken, that's your problem. If not, at least you should be certain that your terminals are whole.

On mine, the terminal end was broken off the wire that feeds the terminal in question. I cobbled up a fix with some wire connectors that I had in stock. I didn't realize at the time that the parts catalog shows the exact wire end (terminal) that I needed. I don't know if the part shown in the catalog is even still available.

What makes me think of posting this, is that once I got everything back together, I realized that the PO had made the same cobbled up repair that I did. I now have two of the same type of fixes. That leads me to consider the possibility that it may be a more common problem for the wire terminals to break off inside the fuse panel than one would think. Older vehicles have unique problems. This forum allows us to put our heads together to solve them, rather than each of us trying to re-invent the wheel.

A good strong light is a big help. Hope this helps.

Good Luck, L.M.
 
#8 ·
Well finally got around to checking out wiring all the way to the fuse block seems to have power at all apropiate places looks like it is time to pull dash and get into the fuse block Way Too Much Fun
 
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