... Only one line is needed for tach, and unless you are actually driving a stepper motor, there are only two signals each with a complementary output... IAC1 and IAC2.panel wrote: ↑Wed Mar 22, 2017 10:24 pmthx for you patients Pile.
To confirm for the TACH circuit , make sure these are all done (I'm not running an IAC valve):
a) JS0 to IAC1A
b) JS1 to IAC1B
c) JS2 to IAC2A
d) JS3 to IAC2B
e) JS9(+12V) to S12C
Then I can tap into these outputs IAC1A, IAC1B, IAC2A, IAC2B provide a 0-12V signal ?
Example: IAC1 (A,B) A&B will ALWAYS be opposite of each other. Same for IAC2.(processor outputs)
Use IAC1A for tach and pull the rest of the IAC jumpers and you have 3 spare pins on the DB37.