I saw online I could use a relay to bypass brake switch on the pioneer head unit. I want use something smaller is there another way of doing this. this is how its wired to a relay-pin 30 green(parking brake) wire from radio pin 86 and 87 are Black (ground) wire pin 85 is Blue(remote) wire. So when I turn on the car the radio comes on then powers the remote wire which in turn grounds the parking brake wire from the radio. Any body have a suggestion