Instrument Panel Circuit Board: Description and Operation
DESCRIPTIONThe printed circuit which supplies current to the instrument panel indicators, gauges, and some clocks, is made of copper foil which is bonded to a polyester base film (usually referred to as Mylar).
The printed circuit is mounted to the cluster housing and due to its location, cannot be easily inspected and/or tested in the vehicle. This makes the printed circuit vulnerable to damage when a probe is used for in-vehicle testing as the probe can pierce the printed circuit or in some cases, burn the copper conductor.