Its pretty simple, if you have the wiper motor with relay from donor car. Just color match the wires from your car under the hood to the corresponding wires that come from the wiper motor, gray to gray, purple to purple, and pink to pink. leaving the yellow wire hooked up as is from the donor car. Now do the same thing to wires from the steering column switch, to the wires where the old switch used to be. The white wire and green wire that you have left over under the hood have to be wired to the white and green wire from the steering column switch. The black wire that you have left from the non relay switch, just tape it up and forget about it. Done deal.