On my 90 16v gli I have replaced the stock battery terminals and run some additional ground cables to the engine and body. I've noticed that a ground wire (maybe 8 - 10 gauge) is connected directly to the battery, which appears to come from the fuse/relay block ground terminal. This wire gets hot when the ac fan is on speed 3 or 4. Why would vw run a separate ground connection instead of grounding to the chassis or ground point next to the fuse block? I am suprised the insulation on this wire is still there (it gets real hot) - maybe it is because more current is flowing through the system with my upgraded connections at the battery?
Can I splice in a ground wire from the ground of the fuse block that connects to the grounding point to the left of the fuse/relay block?
Chad