what wire to tap in to for tach signal for a remot signal?

[97powerstroker]

just as the title says,i need a tach signal so the remote starter knows the truck is running.location of the wire also.

[lwillson]

according to the wiring diagram, it should be the white/pink wire going to the instrument cluster. Break it out of the bundle before it hits the instrument cluster

[97powerstroker]

awesome thanks man,is there any way to test it?

[lwillson]

Depending on what kind of voltmeter you have, if you put it on VAC, you might see a voltage, or if you can measure frequency, you might see a pulse.

[97powerstroker]

ok how about ignition wires? theres 4 big yellow wires and all have power all the time. i thought there should be only two? have any info on constant 12v wires and cranking wires?