The resistor for the radiator fan low speed does live under the brake booster.

FYI, you shouldn't use straight propane for the AC. The pressures are too high, propane operates as similar pressures to R22.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.