<<<What I did the Nissans was to connect a 330ohm resistor between EC36pin28 5V out, and EC36pin3 (P259 ch.4), and EC36pin3 to the tacho. When the VEMS switches pin3 to ground, the voltage drops to zero, at other times you get +5v.
This could just as easily be a +12v supply if thats what the tacho is wanting.>>>
- Could you show me how to do this? Is the resistor value the same 330 ohm? And does this make the 5v supply un-usable to power other functions(launch control switch, fuel pressure sensor)?
Here is my OEM tach info:
Tach +10.8v, 66% DC "on", 3 tach signals per rev.
Thanks!
Kevin