I have a question. I had a local shop install my D3 on my stock setup. Stock speakers and wiring harness. They didnt install the RCA connector. Is that okay? The unit still functions. I realize that the RCA connector is to be used with aftermarket amps. I have one just not yet install yet. I want to do the bypass. Can I just unplugg the mute wire and do the bypass. Then connect it to the back and be set? It wouldnt be running anything to it yet? Is this normal? Someone please help.

So I just plugged in the connector and reset the system. I switched the mute connector but the bypass didnt work yet.

I really need to know how to ground the parking wire. I didnt install the D3, a local shop did. Wouldnt the wire already be grounded? Im confused on what to do next to get it to work. I read the entire 140+ posts on how to bypass the system. Im just new at car electronics. Can someone explain to me how exactly I would ground the parking brake wire? Thanks guys.

I answered your question in the other thread you asked it in.

just connect the lt green prking brake wire and the mute wire that you moved to the black ground wire

Bypass worked like a charm, thanks guys. Appreciate the help.