Just got FAST but now no A/C!

[Hot Air]

I just installed FAST and now my Air Conditioning doesn't work. Jack Cotton told me to ground the green/white wire at computer but but he then told me that the compressor switch will no longer shut down A/C when under boost. So, I need to find a "normally closed" Hobbs pressure switch that will open the circuit at say 5 PSI or so to take compressor load off the engine while under boost. Can anyone tell me where I can purchase such a switch? Is there another way to do this?
Conrad Carter
North Carolina

 

[BoostKillsStres]

You could also use a throttle switch

 

[norbs]

The compressor doesnt care about boost?? this is what you do, get a MSD rpm switch put a 3000 rpm pill in it and a relay to open the the gnd in the a/c circuit abive that rpm

 

[BoostKillsStres]

$80 just to turn off the A/C

 

[Hot Air]

So, where do I get a "throttle switch"?
Conrad

 

[BoostKillsStres]

Summit racing, jegs,... might have to do a little fab work so that it will work at less than WOT. Position the switch arm so that the throttle arm activates it by brushing past it rather than only contacting at WOT.

 

[Hot Air]

Thanks for the info.
Conrad

 

[Hot Air]

I thought I would share something I just found. The A/C compressor can be switched off when under boost using a Hobbs switch that is Normally closed (opens at 4psi boost) available from NAPA under P/N 701-1575 and costs about $30.
Conrad Carter