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Tools needed:
-Torx 25
-Torx 15
-Scissors/Knife/Wire Cutters
-Flathead screwdriver/Knife
-Wire Taps (or wire strippers + solder + electrical tape)
Parts:
-Window down relay, part #: 6848215 (costs $50-$70 new from dealership, but you can usually find an entire master window switch w/ relay included for ~$20 on the forums. Even cheaper at the junkyard)
Pictures of part below:
First step is removing your center console:
Pull up trim below ebrake handle:
Remove cig lighter and OBDII connector cover:
Remove the two T25 screws holding the panel on - there is one screw in front of the OBDII connector, and another screw in front of the cig lighter port:
Pull the panel up, slide the OBDII connector out, and unhook the connectors and lightbulb going to the cigarette lighter:
Next, unplug the two large connectors (one black, one gray) the arrows are pointing to, and remove the two T15 screws circled in red:
Open your arm rest compartment and using a knife/flathead lift off the panel. Remove the two T25 screws.
Next, CAREFULLY pry up the heated seat switches (this step is optional, really, because you can unplug the switches after lifting up the center console, but it can be annoying to reach your arm around, etc)
Remove your shift knob (and for manual cars, shift boot) -- (Note: for automatic cars, put the car into neutral and pull up hard on the shift knob -- be careful not to put your head through the sunroof glass when the knob lets go)
Next, slowly lift the entire center console up from the back, and once lifted diagonally, pull backwards and up -- be sure to look out for wires that may get caught, and manuever around the e-brake and shifter
Flip the center console upside down and locate the underside of the window switch:
CAREFULLY remove the two metal clips holding the window switch's wiring harness in place -
Below are the three wires we need to tap into:
Your relay should have the following colored wires coming out of it:
-Black
-Blue
-Yellow
-Green
Connect the wires as follows: (I used wire taps for this because they are quick and easy to use, but you can use whatever method you prefer)
-Connect the BLUE wire to the BLUE wire
-Connect the BLACK wire to the BLACK wire
Next, cut the WHITE wire -- Now connect the YELLOW wire from the RELAY to the WHITE wire that goes to the window switch. Then connect the GREEN wire from the RELAY to the end of the other the WHITE that goes to the main plug.
Tuck the wiring harness back into place, reinsert the clips, and find a safe place the the second relay that wont get in the way when you reinstall the center console. In cars with manual transmission, I found there was plenty of room right behind the passenger heated seat switch.
Enjoy your new dual automatic down function windows!
