Gauge Installation on a Gen 3 Dodge Cummins

Because the gauges need to get powered when the ignition key is on, you should use a switched ignition (keyed hot) source.  A common location is the cigarette lighter power wire or the radio power wire. On 2006-2007 models, this Pink wire with Yellow trace in the “100” pin wiring harness connector can be used.  If this wire is used you should install the in-line fuse assembly that comes with the ISSPRO kit. If you use a smaller gauge wire, like the cigarette lighter power wire, the fuse is not necessary.