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2016 Ford F-150, Adding Shock Sensor to OEM System


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tctctc 
Member - Posts: 3
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Joined: November†18, 2021
Location: Nevada, United States
Posted: November†18, 2021 at 4:43 PM / IP Logged Link to Post Post Reply Quote tctctc
2016 f150 lariat crew cab factory alarm, smart key, remote start.
Customer supplied megatronixusa shock sensor kit.
Having trouble getting output wire from module to interrupt door pin wire to set alarm. Shock sensor is working, can switch from ground or power output. Looking for a door trigger wire to interrupt and get alarm sounding.
Any suggestions on what wire I can tap to or interrupt? Lots of electrical experience just not so much on the newer vehicles and integration or alarm type of items.
Any help is greatly appreciated!
i am an idiot 
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Joined: September†21, 2006
Location: Louisiana, United States
Posted: November†18, 2021 at 8:25 PM / IP Logged Link to Post Post Reply Quote i am an idiot
Left Front Door Trigger      brown      - N.C.      driver kick, harness to rear or BCM in passenger kick, 52 pin plug (E), pin 33      Directwire      
Right Front Door Trigger      white      - N.C.      BCM in passenger kick, 52 pin plug (E), pin 21           
Left Rear Door Trigger      green      - N.C.      BCM in passenger kick, 52 pin plug (E), pin 46           
Right Rear Door Trigger      yellow      - N.C.      BCM in passenger kick, 52 pin plug (E), pin 19           
Dome Light      gray/violet      +      BCM in passenger kick, 36 pin plug (C), pin 13           
Trunk/Hatch Pin      brown/yellow or yellow/orange (tailgate ajar)      -      driver kick or BCM in passenger kick, 52 pin plug (E), pin 34           
Hood Pin      blue/orange      - N.C.      BCM in passenger kick, 40 pin plug (F), pin 14      
Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win.
tctctc 
Member - Posts: 3
Member spacespace
Joined: November†18, 2021
Location: Nevada, United States
Posted: November†19, 2021 at 9:39 AM / IP Logged Link to Post Post Reply Quote tctctc
Thanks - I came across your post previously on another thread for a newer f150, didnít know if they were the same.
So my units output trigger can be pos or neg.
If the door trigger wires are NC with a neg charge, Iíll assume throwing a negative charge from my output wire to a trigger wire wonít set off the alarm. Iíll have to ďbreakĒ that nc wire somehow. Safe to do by just throwing 12v at it momentarily or is that asking to mess up something on the oem side of things? Need a diode or something? Any help is greatly appreciated. Not much of an alarm guy. ☹️
i am an idiot 
Platinum - Posts: 13,492
Platinum spaceThis member consistently provides reliable informationspace
Joined: September†21, 2006
Location: Louisiana, United States
Posted: November†19, 2021 at 12:07 PM / IP Logged Link to Post Post Reply Quote i am an idiot
I am not sure how the Normally Closed triggers work. You asked about which wire to interrupt, and I figured that if you interrupt one of these wires using a relay it may set the alarm off. Find one of the wires, arm the system and wait the minute, then cut the wire. If this sets the alarm off you can use a relay to do that.   Also need to see if your sensor is capable of driving a relay. 160 milliamps is what the coil of the relay draws. Constant power to 86 sensor trigger wire to 85. One end of the cut wire to 30. Other end of cut wire to 87A
Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win.

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