Ok I have an Aftermarket Voltmeter wired in my car. When I take a read from the battery itself with the car off it's 12.9v. With the car on the battery reads 14.5v but the Voltmeter reads 13ish volts. I turned on the A/C on full blast along with the Headlights, Fog Lights, and my radio on turned up and the Voltmeter reads near 10v, but the battery reads around 13.0-13.3v. I have my Voltmeter wired with the radio's ground and to the fuse box. I want to match the reading on the battery with the gauge.
I also have an Underdrive crank pulley. It's the only underdrive I have. I also have a Cobra Overdrive water pump pulley.
I also have an Underdrive crank pulley. It's the only underdrive I have. I also have a Cobra Overdrive water pump pulley.