2013 F250 Alarm Wiring

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=139709
Printed Date: May 15, 2024 at 9:10 AM

Topic: 2013 F250 Alarm Wiring

Posted By: charbaugh
Subject: 2013 F250 Alarm Wiring
Date Posted: November 11, 2015 at 7:11 PM

I'm in the middle of installing a Viper alarm in my F250. Everything is pretty straight forward using the T-Harness, however it calls for tying into the door trigger and lists two locations possible for the tie-in. 1 is the BCM 26-pin connector, and the other is the driver's kick panel harness (GREEN/ purple). I'd prefer the driver's kick panel, since all of the my other connections are on that side of the vehicle. The challenge is that there are no less than 5 wires in that harness that are GREEN/ purple. Any idea how to identify which one?

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Clark Harbaugh

Replies:

Posted By: kreg357
Date Posted: November 11, 2015 at 7:47 PM

Probably the easiest way is to go to the BCM in the PKP. There you have an exact location. Info from ReadyRemote :
Door Trigger GREEN/ purple - N.C. @ BCM in passenger kick, black 26 pin plug (C), pin 9

Just remember that these door triggers in Fords are NC (-) type. That means they test as a (-) when the door is closed and go
to an open state when the door is opened. Set your DMM to 20V DC, Red lead to +12V constant and Black lead to suspect wire.
It will show +12V when the door is closed and go to a float ( ~0V ) when the door is opened. Once you identify / verify the wire at
the BCM you could look for a similar sized / colored wire in the DKP and use the same DMM test procedure.

When not using a full featured bypass module, most installers go to the BCM for the Parking Lights, door locks, etc.

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Soldering is fun!

Posted By: davep.
Date Posted: November 11, 2015 at 8:55 PM

When using the actual door triggers, you have to find all of them, and diode isolate them, as well as isolate the alarm trigger from the BCM inputs. Each front door, and both rear doors (crew cab) have an individual trigger. It's a lot of work. On the Ford trucks I've done, I use the (+) door trigger input, and wire it to the dome light switched (+) blu/blk, and program door warning chirps to OFF. It's a lot less work.

Maybe the domelight wire color has changed and is now grn/purple, which is why there are so many of them, and is why the ready remote site says use it. Test.

Posted By: charbaugh
Date Posted: November 12, 2015 at 8:32 PM

Thanks, guys. I ended up running to the BCM. Working fine now.

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Clark Harbaugh