a/c doesn’t blow when remote started

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=128206
Printed Date: May 12, 2025 at 5:40 PM

Topic: a/c doesn’t blow when remote started

Posted By: allsportsfan792
Subject: a/c doesn’t blow when remote started
Date Posted: August 11, 2011 at 1:54 AM

I have a 2004 Ford Mustang and when I remote start it to have the A/C blowing when I get in the car it doesn't work yet if I do the heat in the winter time it works like a champ. When I am in the car using the ac I can hear the ac compressor turning on and off but I never hear that when I remote start it.

Replies:

Posted By: kreg357
Date Posted: August 11, 2011 at 5:39 AM

Sounds like you are not powering up an Accessory wire during remote start. There appears to be more than one for your car. The wire guides differ on their info. Below is the info from several guides. The best way is to use your Digital Multi Meter and check / test each wire, then connect the remote starter accordingly.

Audiovox info :
Ignition 1       RED / LIGHT GREEN (+)        IGNITION SWITCH HARNESS
Ignition 2      GRAY / YELLOW (+)               IGNITION SWITCH HARNESS
Ignition 3      RED / BLACK (+)                    IGNITION SWITCH HARNESS
Accessory 1 BLACK/ GREEN (+)               IGNITION SWITCH HARNESS
Accessory 2 RED / YELLOW (+)                 IGNITION SWITCH HARNESS

Bulldog info :
IGNITION 1                                                     RED / LIGHT GREEN (+)          @ IGNITION SWITCH HARNESS
IGNITION 2                                                      RED / BLACK (+)                       @ IGNITION SWITCH HARNESS
IGNITION 3                                                      N/A
ACCESSORY /HEATER BLOWER 1           GRAY / YELLOW (+)                   @ IGNITION SWITCH HARNESS
ACCESSORY /HEATER BLOWER 2           BLACK/ LIGHT GREEN (+)    @ IGNITION SWITCH HARNESS

DEI info :
Ignition                                RED / lt. green +                            ignition harness
Second Ignition                 N/A
Third Ignition                    N/A
Accessory                        gray / YELLOW and RED / black +    ignition harness
Second Accessory            BLACK/ lt. green +                          ignition harness

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Soldering is fun!

Posted By: tonanzith
Date Posted: August 11, 2011 at 10:52 AM

Definitely not powering up the accessory wire or it has blown it's fuse.

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Gary Sather

Posted By: allsportsfan792
Date Posted: August 12, 2011 at 6:24 AM

Ok I noticed I had 2 gray / YELLOW wires under the dash so I tried hooking both up along with the other one plus the BLACK/ lt. green but still nothing. Would it work if I ran a wire on my remote starter to the wire that energizes the A/C Clutch Control. I have a wiring diagram from a Clinton manual but none of those wires are the ones I currently have hooked up to the remote starter.

Posted By: kreg357
Date Posted: August 12, 2011 at 9:16 AM

If it works with a normal key start up, then it should work with a remote starter.

First verify that the remote starter is indeed outputting power on all its' Ignition & Accessory wires. ( Possible blown fuses. )

Depending on the R/S model, you might need to add additional relays and circuits to properly isolate and power all the required ignition circuits.

And of course, break out the DMM and test all the cars' ignition wires at the ignition switch to correctly identify each.

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Soldering is fun!

Posted By: tonanzith
Date Posted: August 12, 2011 at 10:11 AM

Ignition     RED / lt. green     +     ignition harness
Accessory     gray / YELLOW and RED / black     +     ignition harness
Second Accessory     BLACK/ lt. green     +     ignition harness

If you have duplicates of the same gauge and colors test them to make sure but they should ALL need to be powered from the remote start to properly work. also test each wire in the ignition harness to see if by chance you have an extra accessory wire that is NOT listed.

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Gary Sather