Street rod ac

Nov 10, 2020 9:31 AM - 175 Views Create A New Thread

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Simpsonville, SC

A.c. is connected to a line that is always hot
Is hooking a.c. to a 12 volt line that is always hot, like the lights, etc ok?

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  • GeneF
    Nov 22, 2020 at 2:44 PM

  • Jim is right. A good heavy ground is desirable. My 36 Plymouth S/R has a heavy solid copper ground wire that makes a loop around the underside of the car. It's ground wire like you would use to attach to the ground peg on a house. Frame steel has too high a carbon content, and the battery in my car is in the trunk. My last rod had the battery in the R/F fender, behind the wheel, and I like that better.

  • jimmothershead
    Nov 22, 2020 at 7:13 AM

  • Ken
    Like delux39 and tazhog sez = controls and compressor must have 2 dedicated circuits.
    Grounds must be 2 dedicated conductors the same size as the feeds/hot wires. Connected to a ground block not sheet metal.
    I have wired over 100 neat cars since 1957. A master electrician since 1969
    Jim, Hot Rod School of Hard Knocks
    410 535 1933

  • GeneF
    Nov 21, 2020 at 1:59 PM

  • And at least a 63 amp alternator. Anything less and the clutch slips on the compressor. Sure it will last a few years, but then... I'd say 90 amps is the smallest I'd feel safe with these days.

  • tazhog54
    Nov 10, 2020 at 8:53 PM

  • Needs to have a direct line to the battery with a 30 amp circuit breaker between it and the battery . The best is about 4" from battery then to circuit breaker and onto your A/C

  • delux39
    Nov 10, 2020 at 11:41 AM

  • The AC should have a dedicated circuit. With the fan on high or even medium it draws quite a bit witch would overload a piggybacked circuit.

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