Question about instrument voltage regulator

In addition to ground problems on the boards, the other problems are:

Broken/ corroded / loose pins on the board connectors

The spring connectors for the instrument limiter are NOT soldered to the board. They can become intermittent. I soldered mine to the board.

The nuts connecting the gauges to the boards can also become intermittent. Loosen/ tighten the nuts several times to "scrub" the connection.

So when you have it apart, THINK about the current path from the igniton supply pin --is it loose? to the regulator -good connection- to the output -same? to the gauge nuts --are they making good contact?

To drop the panel is not difficult. Pull the trim under the column, remove the floor plate bolts, remove one bolt up under the column bracket down by the pedals, and last, remove the two nuts up near the dash, and the column will just drop down.

Reach up from below, up through to the right of the parking brake and undo the speedo cable.

Then just carefully "fold out and down" the panel. The bottom of the speedo "hooks" over the dash, so it doesn't pull straight out.

Be careful of the board connectors.