After Market Tacho Signals

[66 skyline gt]

he guys has any wired up an after market tacho to a rb20det yet, im fitting one to my conversion in my 66 gt.

i have started chekin for signals for the tacho ,some say pin 7 on the ecu but that is a ground signal collector for the tacho.

does any one out there no where to pick the signal from or even the wire trace colours?

any help much appreciated

Cheers... Pete

[66 skyline gt]

bump

[Sumo]

Well the coil packs im pretty sure use negative switching to fire the spark.Which would give you a -ve pulse. I have not seen how the original tacho is wired in, but I would nearly be willing to put money on that your going to have to use a -ve pulse.

Cheers

Sumo

[justin911]

hey

dunno if this helps but i just had a look in to the service manual abput the ecu's

it ses

pin - 39 tachomoeter signal

pin - 43 tachometer engine rev signal

[Oosh]

http://www.rb20det.com/ecupinout.html