thundernoodle

Im swapping an OBD2 GSR into a 90 DX. Im using the OBD2 injectors and I have a spare wire from each injector. Im not using a resistor box, so do I wrap all the spare wires togeather and just leave them? Do I ground them to the car?

thanks

thundernoodle

I also have a spare wire coming off the IAB and the VTEC oil pressure switch. Are these grounds or can they just be cut?

thundernoodle

Maybe move this to 88-91 Civic section?

94EG8

the 4 yellow/black wires all get connected together and then go to 12v switched ignition power. the brown, yellow, red and blue wires go to the ECU.

thundernoodle

Im using a swap harness so the red, blue, brown wires were already wired. Could I run them to any 12v source, like the VSS power or batt?

94EG8

You can probably run them to VSS power, on a stock harness VSS power and the injectors power wires and a few other things go into a junction connector (block off plug) where they're all connector together. Don't connect them to battery power though, you don't want them drawing power with the key off.

thundernoodle

Ok so as long as the power is from a 12v thats not "constantly" on it will be good? I only need one 12v to be powered and the others will be powered enough?

thanks for your help

94EG8

Yes, you want something when the key is in on (II) and start. connect them all together and then connect one to the power source.

thundernoodle

So basically anything engine sensor related will be an accessory?

thundernoodle

https://honda-tech.com/forums/acura-integra-6/obd1-p72-ecu-pinout-2013742/

going off of blueintergaboy's p72 pin out could I run a wire from A15 in the GSR ecu as my accessory power?

94EG8

No. Also, no 12v switched ignition power wire goes back to the ECU so you're kind of wasting your time looking at ECU pinouts.

thundernoodle

What about splicing it into the main relay wire on the drivers harness plug? its also yellow/black.

thundernoodle

If I have 2 wires from the harness that used to plug into the 2 injectors (it was a DX) and the 4 wires from the new injectors, the 2 from the harness should already be 12v acc, right?

94EG8

Yes.

thundernoodle

ok. I feel dumb. for the help!

crx_si-r

make it easy on yourself and use the yellow/black wires coming off your driver side shock tower plug forthe power source.