Originally Posted by redxlt
I checked with my cousin last night. He has a shop in which he restores cars and builds engines for Joe Gibbs Racing He looked at the instructions you guys have on the install and he said the VSS gets its power thru the GEM and must be hooked up there ,the temp semsor gets its power thru the main power on the console. Light dimmer is an option if you want a dimmer you should hook it up if not dont. All the other issues can be hooked up to power anywhere you want as long as it is protected by the switch. He suggested an inline fuse as well for the power wire.
Correct about the VSS wire and the GEM
However in 2004 they do not have the GEM behind the radio so you have to find the VSS wire which is in a bundle of wires by the e-brake pedal
I dont see why you would add a fuse to the power wire if you just connect it to the power wire on the radio.