After 1967, all trucks were equipped from the factory with printed circuits behind the instrument cluster instead of a harness to operate the gauges and lights. Not only was it more cost effective for the factory to use a printed circuit, but it saves space, weight and reduces the “rats nest” of wires typically found behind your cluster. Your truck's printed circuit is simply a piece of plastic with conductive copper material embedded in it. Unlike solid hard computer printed circuit boards, these boards are flexible, translucent plastic sheets which operate in the same fashion by conducting electricity to the different dashboard functions. This circuit can act as a fusible link when using the wrong fuses in your fuse block leading to damagin

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov