Instrument cluster
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Joined: Sep 2004
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From: Cambria California
Instrument cluster
I am working on a 1978 L82. My problem is all the gauges work fine until
I turn on the headlights, then the gauges peg, including the tach. Using the dimmer on the headlight switch causes the needles to swing like the dimmer is controlling the gauges. fuse does noy blow, I suspect that the power from the light cicuit is shorted to the gauges. Someone in the past has worked on this because the printed circuit board is chewed up.
I have the schematic from the service manual but it is not detailed enough to use it for circuit tracing also some of the nuts that secure the circuit board are missing.
What I need is a new circuit board and pictures of the back of the cluster showing which gauges receive the nuts before and then after the circuit board is installed.
Does anyone know a source for a reasonably priced printed circuit board?
Thanks
Clix
I turn on the headlights, then the gauges peg, including the tach. Using the dimmer on the headlight switch causes the needles to swing like the dimmer is controlling the gauges. fuse does noy blow, I suspect that the power from the light cicuit is shorted to the gauges. Someone in the past has worked on this because the printed circuit board is chewed up.
I have the schematic from the service manual but it is not detailed enough to use it for circuit tracing also some of the nuts that secure the circuit board are missing.
What I need is a new circuit board and pictures of the back of the cluster showing which gauges receive the nuts before and then after the circuit board is installed.
Does anyone know a source for a reasonably priced printed circuit board?
Thanks
Clix
Last edited by Clix ratchetelli; Jan 27, 2006 at 11:28 AM.
