The resistor and diode trick works for a while but when the truck sits for a long period of time the centrallocking module goes to sleep and the resistors aren't strong enough to ake it up and unlock. Use the relays and resistors and they will work everytime. Hope this helps. Here is another tech sheet:
| ITEM | WIRE COLOR |POL| WIRE LOCATION |
| 12V|pnk/blk & RED / wht |+ |ignition harness |
| STARTER|yellow |+ |ignition harness |
| IGNITION|blue (16 awg) |+ |ignition harness |
| SECOND IGNITION|red or RED / wht |+ |ignition harness |
| ACCESSORY|green & orange |+ |ignition harness |
| SECOND ACCESSORY|blue & blk/wht *7 |+ |ignition harness |
| POWER LOCK|WHITE/ green *1 |- |driver kick panel |
| POWER UNLOCK|same wire | | |
| LOCK MOTOR|tan/pnk or tan/blk | |driver kick panel |
| UNLOCK MOTOR|blue | |driver kick panel |
| DISARM DEFEAT|tan/white | |passenger kick panel |
| PARKING LIGHTS +|BLACK / YELLOW | |relay under hood at pwr ctr |
| PARKING LIGHTS -|purple / YELLOW *2 | |headlight switch |
| HEADLIGHTS|purple / YELLOW *2 |- |headlight switch |
| DOOR TRIGGER|*3 |- |*3 |
| DOME SUPERVISION|use door trigger | | |
| FCTRY ALARM ARM|lt GREEN/ orange *4 |- |driver kick panel |
|FCTRY ALRM DISARM|same wire | | |
| DISARM NO UNLOCK|same wire | | |
| TACHOMETER|NOT GREEN/ orange *8 | |ign coil, coil pac, injector|
| SPEED SENSE|WHITE/ orange | |wht conn. 2, pin 27 @ PCM *5|
| BRAKE WIRE|WHITE/ tan |+ |brake pedal switch |
| HORN TRIGGER|BLACK/ red |- |steering column |
| WIPERS|brn/wht(L),rd/yel(H)|+ |wiper motor |
| LF WINDOW UP/DN|lt blue - white |A |driver window switch |
| RF WINDOW UP/DN|brn/wht - pur/wht |A |driver kick panel |
| LR WINDOW UP/DN|RED / blk - blu/wht |A |driver kick panel |
| RR WINDOW UP/DN|grn/wht - gry/blk |A |driver kick panel |
| RADIO 12V|pink |+ |radio |
| RADIO GROUND|BLACK/ green |- |radio |
| RADIO SWITCH|BROWN / red |+ |radio |
| RADIO ILLUMINATE|ORANGE / blue (dimmer)|+ |radio |
| LF SPEAKER|lt grn/rd-lt grn/grn| |radio or amplifier *6 |
| RF SPEAKER|lt blu/pu-lt blu/blk| |radio or amplifier *6 |
| LR SPEAKER|wht/red - wht/blk | |radio or amplifier *6 |
| RR SPEAKER|tan/pur - tan/blk | |radio or amplifier *6 |
Notes:
NOTE: Chrysler vehicles that use a gray ignition key have an immobilizer system that needs to be bypassed when remote starting. Use DEI part number 555C or 555U. *1 Lock requires a negative trigger thru a 820 ohm resistor. Unlock requires a negative trigger thru a 330 ohm resistor. MUST use relays. *2 Parking lights require a negative trigger thru a 330 or 1.4K ohm resistor. Headlights require a negative trigger thru a 1.8K ohm resistor. There is a rest resistance on the wire, so MUST use a relay to isolate away from the switch. *3 The LF door trigger is tan, and the LR door is tan/orange or PURPLE / orange. These wires are in the driver kick panel. The RF door trigger is tan/red, and the RR door is tan / YELLOW. These wires are in the passenger kick panel. Use all wires and diode isolate each. See directfax document #1076 for wiring information. *4 This will also do door locks. Arm/lock is negative trigger thru a 2K ohm resistor. Disarm/unlock is negative trigger thru a 480 ohm resistor. Single pulse will do disarm without unlocking the doors. Unlock requires a double pulse. MUST use relays. *5 The PCM (Powertrain Control Module) is on the passenger side firewall. *6 The amplifier is located behind the glove box. *7 These wires may not be necessary for remote start. *8 Diesel tach wire use gray/black in the black plug at the PCM.