Reddit reviews 12 Volt DC Dimmer for LED, Halogen, Incandescent - RV, Auto, Truck, Marine, and Strip Lighting - Short Shaft - Black
We found 2 Reddit comments about 12 Volt DC Dimmer for LED, Halogen, Incandescent - RV, Auto, Truck, Marine, and Strip Lighting - Short Shaft - Black. Here are the top ones, ranked by their Reddit score.
Dims up to 60 watts (4.2 amps) of incandescent, halogen, or LED lighting reducing heat and power drain on batteriesFor new custom installations or to replace an existing on/off switch in an RV lamp fixture to create low-light ambiancePerfect for RVs, trailers, boats, cars, trucks, or anywhere 12 volt DC power is present. Fits in small spaces where other dimmers can'tPackage includes: dimmer assembly, 3 wire nuts, optional diode for fan speed control, and quick start instructions. Available in 2 shaft lengths. This item is the standard shaft modelEngineered and manufactured in the USA
Your motor may not like PWM. Try a regular DC dimmer instead, like [this] (https://www.amazon.com/dp/B01C4UBMW8/ref=cm_sw_r_cp_apa_ykmRzbCRCQ4WH).
Something like this dimmer switch might work? Would be a fun rabbit hole to fall down.
[Edit]
So I tracked down the power to the dash lights (cluster etc). Its fuse #6 in the fuse box on the passenger side interior. Could tap right into that and run the dimmer up to the dash for easy access. I've saved it to a wishlist but have bigger fish to fry atm. Cheers!