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2016 Mustang GT with a 1967 Fairlane body

LXCam

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Joined
Apr 23, 2013
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19,400
Location
AZ
Pretty sure the taillights have a circuit board in them and the BCM communicates with them.
I’m with
What is different about the mistake tail lights? Do you have wiring diagrams? Let’s see if we can help you simulate them. You have gone too far with This project not to. The car looks great!
See if you can source some off a totaled ride and disassemble them. Most likely it’s a module that monitors and controls the led load(s). Once you/we have a load value for them, it can be mimicked with a resistor I bet.
 
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dscheidt

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Apr 26, 2017
Messages
2,963
What is different about the mistake tail lights? Do you have wiring diagrams? Let’s see if we can help you simulate them. You have gone too far with This project not to. The car looks great!

Pretty sure the taillights have a circuit board in them and the BCM communicates with them.
If you have the diagrams, and the theory and operation of the circuit, it's likely there's a way to send the correct signal back to make the bcm happy. I'd be surprised if you can't find out what it is.
 
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Slednut

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Joined
Dec 20, 2012
Messages
2,563
Location
Washington state
I’m with

See if you can source some off a totaled ride and disassemble them. Most likely it’s a module that monitors and controls the led load(s). Once you/we have a load value for them, it can be mimicked with a resistor I bet.
I’ve read the tail lights can be put in an oven at 250 degrees which melts the adhesive and then be dismantled. Guys do this to change the color of the lenses.
 
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Slednut

Well-known member
Joined
Dec 20, 2012
Messages
2,563
Location
Washington state
I’ve been driving my Fairstang so much that I haven’t really worked on it to fix the last few things. I did install Mustang tail lights and stash them in the trunk so the BCM is now happy. I had a vibration in my driveline that I had made. I bought a piece of DOM tubing and my son-in-law turned it down on his lathe. I press the two ends from the stock driveshaft onto the tube. I welded it up and now it’s vibration free. I also had a problem with the cruise control and the horn not working. Today I installed a new clock spring in the steering column and it fixed that.

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