I am getting ready to do the center console mod here in a few weeks and know that I'll need to move my rear window switch. I was wondering if there is a way to re-wire the switch so that I don't have to have the key in the ignition to roll the rear window down. Any help would be greatly appreciated.
You would need to be pretty electronic savy to do that . Everything in the rear hatch is controlled buy a control unit, basically a bunch of relays. That control unit make it tricky to wire the rear window switch to constant power.
You can do it, but as said above you would have to by-pass the Rear Door ECU and the Body ECU in the existing circuit, and run two new switch wires all the way to the back door. You can't use the existing wire as that is a multi-purpose 'communication bus'. It will also require a full-time heavy duty 12V+ source wire from the battery to the liftgate and tapping any existing full-time 12V+ circuit in the dash for the switch signal. (The window motor is too much load for the existing full-time supply to the liftgate.)
You then need to wire two standard Bosch relays to the red (up) and green (down) wires to the rear window motor and to the new signal wires and the new power wire (plus tap the existing window ground. This diagram shows what you have to do. Where it says Driver's think Rear, and where it says switched, think battery full-time. The two 12V circuits (switch and motor) would then be separate, not connected as in the diagram here. Likewise the grounds.
Easy Peasy. It would then be easy to piggyback a second switch to install in the back if you want to sleep back there.
Could something like this be done and wires run all the way to the front? Curious even further if there would be a way to run essentially a 3 way switch like this. So I could have one in the rear of the truck as well as one in the front?
