I have an '87 900 Turbo SPG that I drove over a fairly rough road this weekend and about half way through the trip my gas guage stopped working, I am assuming that it is a wiring problem and a connection has come loose. However I am not familiar with the wiring of this car and not sure where to start looking for the problem. Any Suggestions?

 

do you perhaps own a service or repair manual? i would check with haynes to see if they have one for your car, and that will be of help in getting you through this