Originally Posted by an8sec70cuda
What rpm window switch is everyone using for their nitrous systems? I've been running w/o one, but thinking I should put one in.
The little MSD 8956 only handles 1.5 amps...nowhere near what the solenoids pull.
I have a Leash progressive which uses the (-) negative side for activation, if it matters.


Yes make sure you have some window switch, nitrous on a limiter is not good as exhaust ports are usually too thin to handle combustion ( i found this out the hard way a few times) and you will crack exhaust ports and they start leaking water.....
Any way, just use the MSD rpm switch to trigger a relay that supplys your activation power thats all. Use the MSD rpm switch for the ground side of the relay


....BAD A$$ STREET CAR.....