Electrical help

I have a 69 bronco and all the electrical works alright but the temp,oil, and fuel gauges. I noticed earlier on this forum an electrical schematic thru a Bronco Graveyard link, but I cant find it now. Any suggestions?

I always use N8's Site for electrical schematics. http://www.wsu.edu:8080/~i6735189/diagrams.htm

All three of those gauges are powered from an Instrument Voltage Regulator (IVR) that's mounted on the back side of the gauge cluster. The schematics should show it. The IVR produces a pulsed voltage. If you measure with an analog voltmeter, look for the needle bouncing between about 3 and 7-8 volts DC. If using a digital meter, look for voltages anywhere from .5 to 10.5 volts.

Thanks a lot I will check it out