door open trigger wire, 04 maxima

I'm wanting to add RAP to my car (2004 Maxima) using the 3 relays detailed here: but i'm new to these diagrams and i'm not sure exactly where to put the two diodes that it says it needs. I'm going to attempt to walk through the diagram so please correct me if i'm wrong: i'm going to take the wire that turns the radio on that comes from the accessory circuit and hook it up first to pin 86 on the far-right relay on the far left relay, i'm going to put a diode between the accessory circuit and pin 86, and i'm going to put another diode AFTER the first diode connecting pins 86 and 87, and the radio is connected to pin 87. all the rest of the connections are self-explanatory enough for me to wrap my head around, but am i thinking correctly about the diodes? ALSO I need to know if anybody has information on where i can tap the door trigger wire? ThanksI didn't do it. *nodnod*

All Door Trigger RED (-) AT THE BCM       Domelight Super RED (+) AT BCM MODULE NEXT TO FUSEPANEL BEHIND LEFT SIDE OF DASH PIN #48 your understanding the diagram make sure you follow how the Diode bands are placed    if there put in wrong it wont work If i Can't Install it    I Don't need it   Joe