For all you NA tach users...

[ronnie4]

Id like to know which wire is ig- as well before I start cutting wires, the connector on the left has a black wire black, that the one I splice off of?

 

[aphxero]

yeah it should be that one. Check continuity to the ig- pin in the diag box.

 

[ronnie4]

Finally got around to doing this mod today. Works great for me as well, thanks for your help.

 

[terror]

wait so let me get this staight, after you replace resistor you have to splice off of the ig wire and run it through the firewall onto the tach?

 

[ronnie4]

wait so let me get this staight, after you replace resistor you have to splice off of the ig wire and run it through the firewall onto the tach?

That is correct

 

[terror]

ok, so i go around to doing this and it worked great first time i tried it but as soon as the car warms up and the fan kicks in the tach starts to jiggle like crazy then dies soon after, any ideas?

 

[aphxero]

Too many variables to tell. is your fan it's own independent system?

 

[Jacob]

of course I read this after I send payment for a GTE tach circuit

 

[aphxero]

Hey man It's been on jzxp for a month.

 

[terror]

yes it is, also wouldnt attaching the ign- on the tach to the ig- spot on the diag box work?

 

[ronnie4]

yes it is, also wouldnt attaching the ign- on the tach to the ig- spot on the diag box work?

It should, doesn't matter where you get the ig- signal from.

 

[aphxero]

Do you have noise damper on the ignition circuit? I know it shouldn't matter but it might.

Also, what's your power source for the fans? Also what's the power source for the coil side of the relay?

I'll bet it's +b1 (efi relay). Try ACC instead. It'll kick off when you're cranking too. Better starting

 

[terror]

what relay are you taking about? where is acc, the fans are connected to an empty spot on the fuse box and im not sure if theres a noise dampener on or not thanks

 

[aphxero]

Well if youre pulling voltage directly from the fuse box it's more than likely +B which could def interfere with the ignition. And the noise dampener is next to the igniter small grey square thing.

You should probably get a relay on that guy and quick. The battery makes an excellent source for a fans power supply.

If you don't have a relay try using the stock ac condenser fan circuit for it. Just get that huge draw off of +b that's a seriously bad idea.


Thanks.

 

[RockPaperSwoRD]

I just tried it and it worked! running 1jz on 7mge tach. I didnt have to run any extra wire or anything either, I had already matched the tach signal when i did my 1jz harness ^_^