Where should I put my new gauge cluster? I found a spot under the dash near the heater box that should work, but don't want to use more wire than needed. Also, where should a 2" diameter tach go? It's an ac car, and I currently have it off to the right in front of an air vent. The only way I could run the wires is down behind the dash face trim, behind cigarette lighter, and drop down onto the floor. Again, trying to use as little wire as possible. It's a /6 car. Thoughts anyone?