09-19-2010, 09:20 AM
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.