Well I finally got my nitrous kit put back on and put on a new msd digital window switch..and was just wondering how to set this up..on the on rpm i put 3000 and off was 6500 and the #cylinders for 1, (so says msd) but when the motor is on it reads 0 and does not work..yes the arming switch is on..red wire pos 12 volts, black wire ground, white wire tach, yellow wire to the relay..does the grey wire need to be hooked up too?? is this not set up right or what??

 

is it in 4 cylinder mode? thats the problem i had...

 

on msd's site they say to put it on 1 for the ls1's..

 

no put it on 4cyl mode. then it will read correctly. i have a msd digital window switch in my car.

 

ok i put it on 4..is is still just suposed to rad 0? i havent had time to spray it yet..will try it at lunch

 

if the car is off its will read zero. if its on it will read the rpm. since its reading 0 ur ground, relay and power are ok. i would look in to the tach signal. i had that problem once i just had to move the tach wire a bit and it started to work fine.

 

its hooked into my trucks white wire coming out of the guage cluster..thats were i had my other window switch hooked at..ill check into the connections

 

ok its reading 7 for 700 rpm now..tach wire came unplugged...im gonna go spray a 150 shot and see what it does..

 

urs is reading a # 7 or 700? because mine reads the whole rpm, if mines at 650 it will read 650 on the display.

 

it says times 100 ...but it all works well