I am still having problems with my turn signals not working right on my 69 Chevelle SS. The left one works fine but when I turn the right one on they both blink but the left one isn't quite as bright. The grounds in the trunk are good, I checked that. Yesterday when my dad was following me he said that when I had my foot on the brake both blinkers worked just fine. Also when I step on the brake all the dash lights and aftermarket gauge lights come on. Now here is my question. When we put in the aftermarket gauges in we hooked the wire for the lights to the fusebox instead of the headlight switch, Would this be causing a bad ground too and feeding back through the blinkers? Any advice would be great. Please help.