Quote Originally Posted by R Pope View Post
Power flows "through" an amp gauge and "to" a volt meter. Well, not really, but it makes it easier to figure the wiring. You can put both wires that now go to the two posts on your amp to the "+" post on the volt meter. That will retain the circuit so everything works. Some volt meters are internally grounded and have one post, if there are two, ground the "-" one, and you are in business.

Most amp gauges I've worked with were wired with 12 gauge wire and either terminal on a volt gauge does not have sufficient length to attach 3 wires especially if two of them are 12 gauge. IMHO there are three ways to solve the problem. 1. take the two wires from the amp gauge and bolt them together and tape the connection. 2. Cut the terminals off and solder the two wires together with heat shrink over the connection. 3. Eliminate the wires totally from under the dash using a diagram from a later vehicle that uses a volt gauge instead of an amp gauge.