I discovered tonight that my brake lights don't work. I checked fuse #18
and it is good. I pulled the wiring from the switch up behind the dash, but
I'm not sure which wires to jumper to get the brake lights to work, nor do I
have the OBD II scanner with which to properly diagnose it.
Anyone have an idea which connections to jumper to create the circuit to see
if the switch is faulty or if some wire is faulty farther back in the wiring
98 Chevy K1500 Silverado
I'll post it here for ya too:
Have you checked your connector plates? (the part that the bulb plugs into)
They go bad on a regular basis from the heat generated by the bulb. Places
like AZ sell 'em for about $25 a pop.
And yes, it is possible for all your bulbs to burn out in quick succession -
or over a long, unnoticed period of time.
Start with the back end and work your way forward - and no, the schematics
aren't in Russian.....they're in "Technician"... ;-)
And BTW - OBDII won't scan your brake lights......or any part of that
As for the brakelight switch, there should only be at most 4 wires in it - 2
for brakes and 2 for cruise. I think you pulled the wrong plug.....
It could be I pulled the wrong plug...however I disagree since I was careful
to make sure the plug I pulled was connected to the switch connected to the
Looking at the schematic, I do see cruise and the brake light are in the
same " block/switch". I guess that will tell me which wires.
Is it PPL and BRN to jumper or WHT and ORG?
If I remember correctly, is a pita to check if its still mounted to the
steering column. But if you can get the connector off it then you can jump
the pins to light the brake lites.
If you have a test light or meter you can check it that way as well.
It should just snap right off the steering column, there shouldnt be
anything loose in side it, so tap it and see if it rattles.
Fuse #18 has nothing to do with your brake lights, you need to check
stop/hazard fuse #1. If the fuse is good and you still have the switch
disconnected, you need to jumper the orange and white wires. Does
the high mount brake light work? I am asking because the high mount
gets a direct feed from the brake switch while the normal brake lights
are fed through the turn signal switch from a relay and maxifuse #2
under the hood.
I took the truck down to my friend's VW shop and we found the orange wire
wasn't getting any power. Turns out it had broken at the next clip up from
the switch. The switch was good, the fuses were good, but the hot wire was
not. The green wire had also broken. It looked like normal wear and tear
was the culprit. At any rate, with both wires resoldered and put back
together the brake lights work like a charm and since this guy was my
friend, I worked with him ( he is a mechanic by trade ) and now I know what
was done and how to fix it the next time around.
BTW, does Chevy sell a tool to get at the switch cause a man's hand doesn't
fit very well. Now if either of us were 2 foot 6 inches with 6 inch
fingers, the job would have been sooo much easier...but, no, we are 2 fat
old white guys trying to fix this POS, that's piece of spaghetti for those
who don't know the acronym. Anyway, thanks a bunch Les. I do wish you'd
let me give u $5 for the suggestion.
No it's Point Of Sale obviously!
-The Lonely Grease Monkey
1985' K5 305CUI TH700R4 NP208
"Ignorance is preferable to error; and he is less remote
from the truth who believes nothing, then he who believes
what is a wrong."
- Thomas Jefferson
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