brake and blinker problems

[gil420]

I have a 94 s-10 blazer and my left rear brake light and blinker dont work for the most part, I replaced the bulb but still the same thing, but yet if I take a screw driver and tap ont he screw it starts to work, it doesn't happen when I tap on the light, I checked for bare wires that could touching inside, but nothing...And after I tap on the screw it only will work for a certain amount of time..any thoughts on what the problem is, and also I was looking for the ground wire but I cant seem to find it....I have had many problems with my blazer and 60% of the time I find a loose ground, any help??

[OverBoardProject]

there's a ground wire hooked up there somewhere, and it's probably loose or dirty. I guess that you'll just have to look again

[Fractured1]

look on the frame rail behind the rear tire and inside towards your spare...should be right in that vicinity...

[dblthebass]

definitly check the ground wire