How do I know which relay diagram to use?

they are in the driver kickpanel.  on the bcm there are 3 relays on the bottom left pull all 3 and tap pin 30 for a positve output to control your alarm.

This is all new to me.  What is bcm? what does pull and tap pin 30 mean? 

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |

|              12V|red                 |+  |ignition harness            ||          STARTER|yellow              |+  |ignition harness            ||         IGNITION|blue                |+  |ignition harness            ||  SECOND IGNITION|BLACK/ orange        |+  |ignition harness            ||        ACCESSORY|BLACK/ white *1      |+  |ignition harness            ||       POWER LOCK|WHITE/ green         |*2 |left plug at bottom of fuse ||     POWER UNLOCK|same wire           |*2 |box under cover (1 of 3)    ||       LOCK MOTOR|brown               |   |*3                          ||     UNLOCK MOTOR|BLACK/ pink          |   |*3                          ||    DISARM DEFEAT|violet/white        |   |*3                          || PARKING LIGHTS +|do NOT use          |   |                            || PARKING LIGHTS -|grn/wht or grn/red  |   |at light switch *4          ||       HEADLIGHTS|lt. GREEN/ orange    |-  |at light switch             ||     DOOR TRIGGER|BROWN / lt. green *5  |-  |dome light on/off sw.       ||  TRUNK/HATCH PIN|tied in with doors  |   |                            ||         HOOD PIN|pink/black          |-  |underhood light             ||  FCTRY ALARM ARM|arms with lock      |   |                            ||FCTRY ALRM DISARM|disarms with unlock |   |                            || DISARM NO UNLOCK|see directfax #1081 |   |                            ||       TACHOMETER|gray or gray/red    |   |ignition coil               ||       BRAKE WIRE|WHITE/ tan           |+  |brake switch                ||     HORN TRIGGER|gray/orange         |-  |top right plug of fuse box  ||           WIPERS|pink/purple         |-  |steering column             ||  LF WINDOW UP/DN|lt. green - white   |A  |drivers door switch         ||  RF WINDOW UP/DN|brown - purple      |A  |drivers kick panel          ||  LR WINDOW UP/DN|dk. blue - red      |A  |drivers kick panel          ||  RR WINDOW UP/DN|gray - dk. green    |A  |drivers kick panel          |

Notes:

*1 Not required for remote start.  *2 Use relays and set up for negative trigger.  Place a 4020 ohm resistor inline on the lock output, and a 665 ohm resistor inline on the unlock output.  If you don't have a factory security system use a 1500 ohm for lock and a 250 ohm for unlock.   *3 The door lock motor wires are located in the top left plug at the relay/fuse box under the drivers side of the dash.   *4 If the van has "auto lamps", see direct fax document # 1080  *5 For dome light supervision, use BROWN / white at the dome light on/off switch on the dash.

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

o.k.  does this mean tap means that I need a resistor?

Yup ..... you will need two relays and proper resistor values to do the lock/unlock. Go here ( http://www.velocitymotorsport.com/install_notes/Converting_Outputs.jpg ) and use the " negative input---->negative output diagram with the proper resistor inline of pin 30. If you do not use a relay, you may run the risk that the RS unit that you have not supplying the unlock/lock wires with a solid enough ground. That means having to take everything down and doing it properly , with relays.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA