2003 Dodge Ram, CM900S Remote Start, No Air Condition
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=148359
Printed Date: May 14, 2025 at 2:19 AM
Topic: 2003 Dodge Ram, CM900S Remote Start, No Air Condition
Posted By: ovaldivia
Subject: 2003 Dodge Ram, CM900S Remote Start, No Air Condition
Date Posted: May 13, 2025 at 11:13 AM
i installed a CM900S compustar, remote start works, blower turns on after a few seconds but the compressor clutch or AC doesnt turn on to cool the air down. If i remote start it, then insert key and turn to Run, then AC and clutch engage and cools down. So do i send Accessory voltage to the Run wire of the Key switch? and which wire is the Run wire?
Thanks
Replies:
Posted By: lee.lopez
Date Posted: May 13, 2025 at 11:38 AM
Have you checked the vehicle wiring section of this site? You can see your vehicle is listed as having 2 ignition wires and 2 accessory wires. All 4 should be powered during remote start:
https://www.the12volt.com/installbay/forum_posts.asp?tid=3971&tpn=1
Posted By: ovaldivia
Date Posted: May 13, 2025 at 1:18 PM
i will check when i get home. i do have accessory to the Blue wire and the Black/White wire. Not sure on Green wire or Orange wire. Is this where i should add two relays to seperate the wiring? or wire the accessory power from the cm900 to all four wires?
| ACCESSORY|green & orange |+ |ignition harness |
| SECOND ACCESSORY|blue & blk/wht *7 |+ |ignition harnes
Posted By: lee.lopez
Date Posted: May 13, 2025 at 1:43 PM
Yes, relays would be the way to go. Using an OP500, you could reprogram a couple POCs as negative accessory and ignition. Then use those to trigger your relays.
Posted By: ovaldivia
Date Posted: May 13, 2025 at 8:47 PM
i found the orange wire missing accessory voltage and now everything is working. i didnt have relays but added a fuse there seperated from the other 15 amp fuse. thanks for the help.
Posted By: ovaldivia
Date Posted: May 13, 2025 at 9:22 PM
i have a compustar cm900s but didnt realize it was the model without the alarm. im not worried about my old truck being broke into or stolen, i really hope it doesnt happen though. i had another compustar unit that did have alarm but that unit 2 way remotes are no longer available, over 20 years old and gave me issues so i replaced it with a simple cm900s. i wish the led light was available on this model but it is not, therefore, is there a way to use some output from the cm900s that will set a relay on to send the small voltage flasher to the existing led when its "armed" but its not? maybe when i hit the lock it can trigger a latching relay from its lock wire and unlatch from the unlock wire. or maybe some other external option?
thanks
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