wiring Diag/tuning port

4G-210 · Post by **4G-210** » Sun Oct 04, 2015 8:32 pm

Not exactly sure what it's called technically, but I need some info on wiring the diag port without using the harness for the cluster and ignition switch.

As is stands, I have been able to get power to the ECU and gotten it to fire with a pre loaded tune by adding power to the switch harness plug and the full time power to the extra harness plug.

Now I just need to wire in the diag/tuning port to be able to manipulate the tune.

There are only 4 wires, so it shouldn't be too hard

TIA