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2004 Dodge Ram Truck Door Locks


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stormyj 
Member - Posts: 12
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Joined: December 27, 2016
Location: Indiana, United States
Posted: November 12, 2017 at 6:59 PM / IP Logged Link to Post Post Reply Quote stormyj
Hi all,
I installed an Autopage RS-730A and all is working except door locks. I was reading another thread and it talked about either installing relays on each lock/unlock signal wire from unit with resistors on each wire. Someone also suggested adding diodes to signal wires with resistors, but no relays. Initially with resistors installed on both signal wires, if I connected one wire at a time to the purple w dkblue wire, vehicle door lock wire, the locks would work. I installed diodes on both wires and they don't work by them selves or when both are connected. Is this a case for the relays and capacitors? 2004 Dodge 2500 gas truck. Thanks for any help that you all can give me. Driving me nuts.
Thanks
sparkie 
Platinum - Posts: 2,061
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Joined: November 06, 2003
Location: Canada
Posted: November 12, 2017 at 7:15 PM / IP Logged Link to Post Post Reply Quote sparkie
Use 2 relays and no diodes. The unlock needs a 470 ohm resistor and lock needs a 2,000 ohm resistor. One relay for lock and the other for unlock. The pulses are to ground and the unlock needs a double pulse to unlock all doors. You must use relays to give the vehicle a good ground pulse through the resistors. Diodes will block pulses if used wrong and add resistance.
sparky
stormyj 
Member - Posts: 12
Member spacespace
Joined: December 27, 2016
Location: Indiana, United States
Posted: November 12, 2017 at 7:27 PM / IP Logged Link to Post Post Reply Quote stormyj
Not to look a gift horse in the mouth, but Ive read several places that that truck needs 330 ohm and 820 ohm resistors. Ill try the relays though. Thanks for the input and quick reply.
Thanks
i am an idiot 
Platinum - Posts: 13,491
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: November 12, 2017 at 7:55 PM / IP Logged Link to Post Post Reply Quote i am an idiot
Directechs has 330 and 820
stormyj 
Member - Posts: 12
Member spacespace
Joined: December 27, 2016
Location: Indiana, United States
Posted: November 13, 2017 at 6:31 AM / IP Logged Link to Post Post Reply Quote stormyj
Sorry, but now I'm confused. I thought it was the vehicle that determined which resisters you used. Why would the unit brand matter. Doesn't the unit send a 12v signal to the truck and the resisters change the signal to what the truck recognizes as lock or unlock?
Thanks
Thanks
i am an idiot 
Platinum - Posts: 13,491
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: November 13, 2017 at 7:48 AM / IP Logged Link to Post Post Reply Quote i am an idiot
Directechs is a Directed electronics database with wiring information specific to your vehicle.

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