Does anyone know where to find the engine to chassis ground on the 2007ls460? I’m going to upgrade my audio in the next month and I can’t seem to find it.

 

The engine has multiple ground wires connecting it to the chassis. If you need an engine-to-chassis wire or mount point, you can use any nut or bolt used to attach things to chassis. It is recommended to test ground connection after it was setup.

 

I think I removed a ground near the alternator while replacing it a few years ago. The ground was on the front of the engine if i remember correctly.