ISSPRO PYOR problem?

[Racer Brown]

I just finished installing my ISSPRO gauges and I have a problem with the Pyro. It doesn't read anything! Now, I installed that thing exactly as the diagram said in the instructions. There is no outside power hooked to the gauge on the instructions and no directions in the printed material saying any different either. I'm confused because I have a pyro on my race motor and it has a 12v power source hooked to it, as per the instructions? If this thing is suppose to have 12v to it, do I hook both + and - wires to the 2 terminals on the back of the gauge or not? I'm not especially impressed with these things at this point. These directions leave something to be desired if you ask me.

I did do a test run down the road empty and got 20psi boost in 4th gear pulling from about 30mph on. That's with stock everything except for the K&N filter and no muffler.

See Ya!... ... ... ... . Racer

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Ken-1993 W350, Cummins TD, 5 Speed, 4X4, Club Cab, LE, K&N, Straight Pipe, 4:10s.
http://users. lynchburg.net/ken0069

 

[Scot]

There is no external power source except to the light. The negative lead is not ground. The thermocouple generates a low voltage and the gauge just measures it. Check the thermocouple with a digital voltmeter (running). You should get something (less than 1 VDC). Also check and make sure the red wire is on the (-) and the yellow is (+). When I reinstalled mine, stupid me put the red on positive.

 

[Racer Brown]

Thanks, I did install it correctly then. Problem is, it still doesn't work? Oh well, guess I'll have to get up with "Big Don" and try to find out what's wrong... See Ya!

Racer

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Ken-1993 W350, Cummins TD, 5 Speed, 4X4, Club Cab, LE, K&N, Straight Pipe, 4:10s.
http://users. lynchburg.net/ken0069