Tach help!!

[matt98eclipse]

I have a autometer tach that i installed everything but the green wire witch is the signal wire. Were can i hook this wire up??? I heard i can use pin 109 from the ECU. Would this be ok? Its on a 91 gsx

 

[turboglenn]

There should be a tach output on the ignitor.

 

[big_d]

Yes..According to vfaq.com its 109 pin on ecu. big_d

 

[matt98eclipse]

Turboglenn: what do u mean?

I just wanna make sure before i got and start splicing wires!!

 

[matt98eclipse]

UPDATE: Went outside hooked to pin 109 and tach works great! Thanxs guys

 

[turboglenn]

Turboglenn: what do u mean?

I just wanna make sure before i got and start splicing wires!!

Glad you got it working.. On some of the mistus i've built where the factory ECU was eliminated and we didn't want to use one of our digital outs for a tach signal, I found that there's a Tach output pin on the ignitor that fires the coil packs.. Some of them have it and some don't. im starting to get tired, so i can't remember the part # of the one that does have it. But either way, if it's working for you now, there's no need to worry about it

EDIT: it's the center pin on the J722T ignitor module.. it just hit me