I just installed the JWest fog light flash module. It took me about a half hour and the provided instructions were clear and effective. I debated using Demick's
foglight rewiring instructions but didn't want to cut my harness at all.
The best feature of this modification is that you can sit in the car in your garage and flash the fogs on and off and pretend you are telling Steve McQueen to get out of your way at LeMans!