Thread: i feel like this is a dumb question...

Originally Posted by BillBoost37

If you head to the parts stores etc..most of the prongs/connectors are meant to work together. I've never looked at the sizing other than the gauge of the wire for the connector.

What you need to do is run a ground wire to pins 30 and 85 from the body or the radio ground. Run the amp turn on wire from your head unit (blue/white) to pin 86 and then run your parking brake wire from the radio to pin 87. If your relay also has an 87A, do not connect anything to it.

What this will do is make the radio connect it's own ground to the parking brake wire when it turns on the remote amp. I've tested this in a Pioneer a couple of times and it works great.

now if i have the pioneer wire harness right (taken from owners manual)



i take the black wire and then connect it to the black wire here to hook up the radio regularly




...but to add the relay, would i just splice the wire somewhere in there (at butt connector) or plug the one from the pioneer to the relay? and then dont plug it to the adapter