So I've had these electrical issues since I bought the truck, and I have NO IDEA what the problem is. Headlights off: Both turn signals work fine. But when you turn the right turn signal on, all of the interior lights (dash and outside temp light) dim along with it too. And then, when I hit the breaks, those lights and the side marker lights (on the front) come on. Headlights on Left turn signal works fine still. 4-ways and right turn signal don't work. Its not where they blink fast, the arrow lights up and stays. Also, all 3 of my break lights come on with the headlights. Its hard to explain whats going on but I'm just what the hell is wrong with this fugger.
I'd check the body to frame grounds...and all the signal light grounds. This is a process of elimination and a haynes manual my be your best bet for tracing these grounds down.
Yup, but with the dimming on the interior lights you def have a voltage drop. If its not the grounds, check the wires themselves
