PCB Modifications

The standard upgrade removes the violet wire (an additional unfused 12v source!). Since it's gone, you must get 12v to the trace where the violet wire was previously located, so that's the lone wiring modification there. If you are adding a keyless entry harness, you'll need a few more modifications. You can solder wires directly to the traces and run them on the bottom, but I opt to keep all of the new wires on the top of the PCB, poking through to the bottom for soldering to the traces. It matches the rest of the assembly, so it looks "correct."

The photos below show both sides of a nearly-bare circuit board with red and yellow indicating new holes that you must drill. The exact location is flexible; the goal is to get the wire so that it can make sufficient contact with the trace once it is soldered. You can drill these new holes without removing all of these components too, just be careful to not drill through something else (like a capacitor). A 5/64" (2mm) hole is perfect for 14 AWG (2 mm2) wire. Also, you may want to slightly enlarge any of the other holes to aid in assembly. The key to the color scheme in these photos:

• Red: drill this hole for the standard upgrade.
• Yellow: drill these holes for the remote lock harness
• White: other points for wiring modifications (no drilling required here).

The photos also have each new hole labeled and here is where each one goes:

• 1 is the 12v source for the remote harness.
• Run a wire from 2a to 2b. 2b is the existing violet wire from the module's wiring harness, so if it's in decent shape, just remove the terminal from the housing, trim and strip the wire, and solder the fresh end through 2a. Essentially, you are replacing the purple wire by getting 12v from the main entry point (now fused!) beneath 2a to 2b.
• 3 is the lock trigger from the remote. If you ground the wire at 3, the doors will lock.
• 4 is the ground to the remote.
• 5 is the unlock trigger from the remote. If you ground the wire at 5, the doors will unlock.
• 6 is the new 12v source wire. You will need to unsolder the existing wire and solder in the new wire with an inline fuse holder.

And that's it! Easy enough.