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Old 06-06-2013, 12:04 AM   #4
Sully Erna
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Join Date: Aug 2006
Location: Dallas
Posts: 42
Re: Swapping ac compressors. R4 to HT6. Wiring help needed

are you talking about the compressor cutoff switches or the fan switch? if it's the fan switch, on my 85 I tapped the low pressure switch wire to a relay. then relay to fan. the pressure switch on the back off the ht6 is what I was referring to in the last post which the r4 did not have.
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