Congratulations on buying this product! Nothing looks better than a rewired door with fresh, bright colored wires. As always, safety first! Turn off the machine and unplug it from the wall. At a minimum you will need to unplug the door from the lower cabinet wiring harness. The best situation would be to remove the door from the cabinet and lay it out in a clean, covered work area. Ready? Let's go!!
Once you have benched the door, remove all the items that may get in the way. The hinge will come off with only four screws and this sample door actually had metal protectors over all three credit switches. Those will definitely be in the way and need to be removed.
Now lets go ahead and identify all of the devices our wires will terminate on. The first item down the line from the plug will be the slam tilt switch. This is one of three mounted in your machine. Then, across the top of the door there are three light bulbs and the test switch. Newer models may also have a volume control mounted along with the test switch.
On around the far side of the door we will see the start button and the lockout solenoid.
Finally, we have the three coin up switches on the backside of the door.
The next step will be to remove all traces of the old wiring harness and perform any planned repairs. The sample here had rusty old light sockets which will get replaced and I'll add a bigger bracket with the volume control installed.
I've found it easiest to weave the new harness through the door as shown. Some may find it much easier to remove the coin slots for the install. It is not necessary but it does make it a little easier. Run it through until the first split of wires comes out the far side.
Now we can begin to connect the new harness one device at a time. Start at the end with the coil and work your way across towards the plug. Cut the wires to length as required.
You will find it easier to solder the wires to the test switch and volume control with the bracket removed. Once you have them done, mount them back to the bracket and then attach the bracket to the coin door. If you do not have the door mounted volume control you can just ignore the black, white and orange wires.