short or bad ground?

[firefighter2134]

ok guys i am chasing my tail here. with meet and greet a little over 3wks away im trying everything in my power to drive bronc there but i keep blowing brake light and turn signal fuses. they do not blow everytime that i hit brakes only sometimes. and turn signal only blows when left turn is on.cratchhe: i thought i had everything working last night wasnt pulling no more than 3.5 ams on brake lights then it all went down hill. i have a painless harness if that helps. 69 bronco. if anyone has any insight please help. my num is nine eight zero, four two nine, zero five five four. thanks in advance . i will keep my progress posted. :banghead:

asiel

[69bronco]

Dude I had the same problem and I ended up taking it to a pro to get it fixed, cost me about a 100 or maybe less if I remember right. Sorry for the lack of help.

[firefighter2134]

Ok after banging head against wall for hrs I think I got it. Only thing I did was take brake light switch off and put it back on...don't know but it worked. Now back to the brakes lost a wheel cylinder also

[firefighter2134]

with engine swap complete i went to take this thing around the block only to realize that turn signal and brake light fuses were blown once again. only thing i can think that is wrong is the headlight switch going bad or brake switch going bad or both. everything else has been double checked and rechecked behind that.

[jdowns67]

I probably shouldn't say this but I installed a painless harness in a friend's 68 Firebird for him and had a lot of problems with weird stuff going on. Maybe they're not all like this but that was my experience. He asked me to do it because I used to work for an automotive electric place wiring cars. Once you go with a painless harness, the factory schematic goes out the window which makes troubleshooting way more difficult. What you describe sounds like a short not a bad ground. Did the harness come with a new turn signal switch? They can cause lots of trouble especially if you have a tilt steering column. Did the painless harness come with a schematic, I can't remember if they do.

[firefighter2134]

yeah it came with all new switches.when i put in the painless harness i changed steering column also. ive even talked to the tech guys at painless. all seems to point at headlight switch for some odd reason.

[jdowns67]

Yea the headlight switches can be troublesome especially if it is an old one. Maybe yo can disconnect or bypass it to see if the problem goes away. I think they're pretty cheap anyway.

JD

[firefighter2134]

true. but i cant get the problem to "duplicate" itself to track it to a switch. it might blow fuse once with headlights on and the next time i cant get it to blow. thats what is making me believe its a combination of both headlight and brakelight switch. i havent found any amp draw indicating a short anywhere.

[chuzie]

you should just give up and sell your bronco to me for scrap.

[firefighter2134]

you should just give up and sell your bronco to me for scrap.

yeah i cant believe i didnt think of this before. cratchhe: