Nightly installment of How the Camera Turns.

I went to another Radio Shack and large electronics store (Fry's) and couldn't find a smaller relay. I found another auto parts store and they had a 20 amp relay so I thought finally. I installed it and it won't trigger the camera either. The reverse lights are on. All three relays I've bought close with a 9v battery.

I had my X5 scanned and it has a bad front left PDC sensor so I ordered 8 and will replace all of them. Once it's working I'm going to use the PDC to trigger the relay. I took the connector apart and pin 7 is a brown/black wire. Is that the one I tap onto?