Hi, Ok.. I'm at a lost. I'm having a problem with my signal light & temp gauge. Most of the time ONLY when I'm moving (even 1 kph) & when I have my signal light on in either direction my temp gauge will move up & down with the flash. This doesn't happen when I'm at a full stop. I've added a missing ground wire from the valve cover to the frame. This fixed the dash signal from going dim. What gage of wire should this wire be? Also I changed out my neg. battery cable with no luck regarding the problem. Any ideas? I'm still banking on a bad ground.