custombuilt64

The ground wire going to your hood is just for AM frequency. Thats it. It wont interfere with anything unless you listen to AM radio

Sammyp92

I know it's months later but it might still help someone else... That wire you described attaches to the fire wall right below the spot that it is bolted to the hood. this ground wire grounds your hood to the chassis and let's the hood act as a sort of antenna for the radio as well. so if your radio is fuzzy then I would double check this ground strap. Very common problem on all these Chevy or gmc 5.3 is bad grounds. The one on the hood is usually the first to go or at least first to be noticed. Everyone with these vehicles should go through and double check all of their grounds/ ground straps. Bad grounds can cause all kinds of weird problems.

kelsonbaum

On my truck, there is a braided harness with round eyelets, one connects to the firewall pin and the other to the hood pjn; then attached to it is a harness of 2 small wires attached to the braid that extends to the hood lamp - then the braid and wires are secured to a plastic stiffener then covered in what looks to be 5/8 prorective conduit. The light assy has a springy plastic housing that easily snaps in and out of the hood and when removed, hangs upside down causing it to shut off when the hood is opened for any lentgth of time (battery draw). This harness can easily be forgotten when closing the hood, or even get caught when opening/closing. I actuallyjust repaired this harness on my truck today as the ground braid eyelet had come detached from one of the pins.