Tail light

ok boys i have a question. on the 88 my left brake light will work half of the time. the running light always works the reverse lights never work, but the left brake light works sometimes i got into it yesterday and cleaned it up. i also tied up all of the wires that had fallen out of their holders cleaned all of the connectors and it worked.... for about 9 times of braking then went back to its half butt deal.... any suggestions?

fuse or maybe a new bulb. it might be wiggle around in there

yeah. it cant be ground cause they all share it right?

i would say its probley the wiring.. if the one side works and the other dont then that eliminates everything up to the split at the tail of the truck.. it could be the bulb socket as well.. start at the split with a test light and work your way back.. use something to hold the brake pedal down and wiggle the wires and bulb around on that side.. you might even be alble to physically see the bad spot in the wire.. i say this all the time and ill say it again.... its really hard to say what the problem is when it comes to electrical because there are way to many variables.. could be something stupid or something more indepth.. start with the stupid stuff like you already did..

the more i work on it the worse it gets..... ive worked from the split on and no help. worked from the front back and it got worse... im stumped and pissed cops dont like one tail light here and im ready to be back on the road without the risk of a ticket

you could run a wire from the other tailight to the problem one........then youd know it was getting power.......

After 11 hours of work today i now have 2 working tail lights.... it ended up being where the wires were spliced to make trailer lights..... if i ever see the guy that had this truck before me im gonna sock him right in the nose....

lol.. im sorry but that would have been the first place i looked.. you can read up about any tail light problem on here and i have mentioned it before.. hack job trailer lights always tend to be a problem after 10 or so years of abuse..

ended up not being that because it stopped agian today..... i ran a wire across from the right to the left and it works but now i have to run a turn signal light.... lol

I'm assuming you ran the power line across to make it work. Which means the ground is probably not the culprit. I would get a voltmeter and check every power connection from the cab back to the light.

been checking my friend's truck on his tail lights also did the same thing but my mistake was checking the light itself and not testing the other factors (like the fuse) i ended up wasting my time removing tail light covers then scrutinizing the part itself just to find out the fuse is blown. doh!

kevinlvy wrote:

been checking my friend's truck on his tail lights also did the same thing but my mistake was checking the light itself and not testing the other factors (like the fuse) i ended up wasting my time removing tail light covers then scrutinizing the part itself just to find out the fuse is blown. doh!

LOL doh .... No not doh
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