st185 tacho with adaptronic

**71MEH** · 28-02-2010, 07:43 PM

Hi guys, i have just recently upgraded from the dizzy to a bank of ls1 coil packs and have removed the standard igniter/coil and the tacho no longer works, i have tried wiring it to the adaptronic on the tacho output however it doesnt work, i believe the adaptronic sends a +ve signal where the tacho requires a -ve signal. does anyone have any experience in toyota tachos on aftermarket ecus?

Cheers,
Tim

JP · 28-02-2010, 09:19 PM

you could try this:

**wilbo666** · 28-02-2010, 09:30 PM

http://www.toymods.net/forums/showthread.php?t=3710

Slight simpler

Can ditch the diode on the input.

Cheers
Wilbo

**RA35GT** · 28-02-2010, 10:47 PM

http://www.adaptronic.com.au/forum/i...sg6103#msg6103

even simpler just use the relay coil itself.

(I have done this on a car and it works)

**wilbo666** · 28-02-2010, 10:51 PM

Originally Posted by 7M-GTE MX73

http://www.adaptronic.com.au/forum/i...sg6103#msg6103

even simpler just use the relay coil itself.

(I have done this on a car and it works)

Makes sense, the adpatronic has the NPN in it

Cheers
Wilbo

**71MEH** · 02-03-2010, 07:46 PM

awesome thanks guys ill let you know how i go.

Cheers,
Tim

**71MEH** · 07-03-2010, 08:16 PM

Hey guys, got the tacho working however it isnt accurate, it was also like this on the stock distributor setup, 7000 is actually 5000 on the tacho, does anyone know how to correct this or do i need a new tacho?

**RA35GT** · 07-03-2010, 08:57 PM

I'd try a new tacho.

**The Witzl** · 08-03-2010, 11:37 AM

if it was like that on the stock system, your tacho is definitely dodgy.
get a new one.

**71MEH** · 09-03-2010, 10:15 PM

Replaced the tacho unit as it smells a bit burnt out, guessing a capacitor is gone, but yeah its all good again.

Thanks for ya help guys.

appreciate it.