Those GM rheostats used for dimming the instrument panel lights were awful. The one in my 1971 Camaro was lousy. The one in my 1980 3/4 ton was lousy. The one in my 2010 Sierra is good - it's a whole new design.

For the 54, I just moved the wire for the instrument panel lights to the same connector used for the running lights - so they are not dim-able. Works for me.


Gord 🇨🇦
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1954 1/2 ton 235 4 speed