Join Date: Nov 2009
Location: London Ontario Canada
1968 ford mustang instrument voltage limiter(regulator)
Hi there, i have a 1968 mustang with stock gauges. Origionally when i bought the car, all gauges were pegging. I metered the cvr and found 12v in and 12v out. So i replaced the cvr and my fuel, and water temp gauges started working fine, but my oil press just sat reading below the L. I have a new sending unit installed and the wire from the sender to the gauge has continuity. I grounded the wire from the sending unit and the needle on the oil press gauge flickered and only swung half way, so i replaced the gauge with another stock gauge from a friend who didnt know if it worked or not. As soon as i put it in, it smoked the cvr, tried another cvr and it smoked to. Put another cvr in and my old gauge, and the cvr didnt smoke, but my old oil press gauge still doesnt work. Everything else still does work in the cluster though.
Why did the other oil press gauge blow the cvr, is the cvr fused, or is it a fuse itself. Do you think the oil press gauge from my friend is actually blowing the cvr, or do i have another prob. Im thinking i have to find a working oil pressure gauge.