Honda Car Forum

Help,
The rear window defogger on our 1991 Integra quit working. I checked the fuse under the dash and the relay switch under the hood and both of them are okay. I also replaced the switch itself with no luck either. I put a voltage meter on the switch pin and I have 12 volts on the White/Yellow wire, the Yellow/Black wire, and the Yellow/Green wire with the switch not pushed in. When I push the switch in the power does not change to any of the wires. I also checked the back window terminals and there is no power on either side. My question is how to proceed? I am not sure of the wiring flow or if there is something else I shoudl be looking at. Does anyone have any idease or know if the the Clymer manual has details or guidance on where would I look?
Thank you in advance for any help or ideas anyone might have. I am stumped.
Jerome
PS - If this is not the correct forum can someone guide me?