When wiring accessories such as A/C, radio, or after market gauges, do you ground the accessories to the dash or firewall? Or, do you go directly to the ground on the battery? What about the power side, do you connect to the battery or run a single wire into the interior. I have a auxiliary fuse panel that has constant power and accessory power. I'm trying to clean up my engine compartment since I have a lot of wires from the interior going to the battery or a distribution block. Thanks
