Here's the deal. The b20z doesn't have the blue wire supplying the tach signal at the distributor. Instead it uses a signal from the ECU (A19 - NEP) for the tach. Well I am using the P75 ECU which doesn't have this "NEP" wire. What do I do for a tach signal?

 

cmon someone has to have a solution...

 

look for wire diagrams of your cluster, and get the tach signal from your cluster harness!

 

my cluster will get the signal from the tach wire source. problem is, no blue wire on the distributor to feed the cluster, and no NEP wire from the ECU to feed the cluster.

 

i know i could probably change the distributor, but i really dont want to do this.

 

help!

 

just run a wire from your neg(-) on the coil ... thats your tach

greg

 

damn! that simple? i was looking on google and they were talking about opoisolators, caps, hall filters and other things...i was like.....no...
thanks cheetah, as always you have me an answer.

 

just to follow up, the b20 diz had the terminal where the wire should go (on the ignitor) and i wired to that, and whalaa...tach. thanks cheetah