Tachometer issues

[jaybirddog11]

100hp 1979 Chrysler
I recently bought a generic universal 12 pole tach. It has negative, positive and a pulse connection. After I hooked them up, when I turn the key to the ON position, the tach redlines. I did not even turn over the engine. I tried to start and no change. I hooked up the pulse to the AC at rectifier, the negative to ground and positive to a fused terminal board. Maybe it is just the tach is not compatible.(So much for universal) Am I doing something wrong?

 

[notsunkyet]

Re: Tachometer issues

sorry to tell ya this but if you bought anything less than a 20 pole tach (if you have a force motor) you need to return it and get ur money back. you will need a 20 pole tach

 

[jaybirddog11]

Re: Tachometer issues

I have a 12 pole stator, not a 20 pole.

 

[jaybirddog11]

Re: Tachometer issues

I found the answer to my problem in the following link. Thanks Frank!!
Worked on muffs, will let you know how it goes out on the lake.

http://forums.iboats.com/showthread.php?t=403641