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  #11  
Old 01-23-2014, 09:39 AM
Cheapstreetduster Cheapstreetduster is offline
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Quote:
Originally Posted by Martyway View Post
you have to understand that the systems on our trucks are all electronic. turning on a light is not as simple as switch makes contact and sends power to the lamp. all functions are controlled and monitored by the BCM when it sees an over current situation it will turn off that function. all the switches on our trucks have a computer address assigned to them this is how the BCM knows what switch is being pushed. the BCM then sends power to the corresponding lamp, window motor, door lock, etc.
x2. the computer controls all of it..
they know how much amp load each item should have...when you add something to it...the load changes..and the bcm sees it as a problem.
same thing for adding on a factory feature your truck did not come with.
the computer has to be prompted before the new feature will work.
you have to tell the truck you now have the item...
Its no longer just plug and play..its plug ..download and play..
fwiw
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  #12  
Old 01-23-2014, 10:39 AM
ghorn ghorn is offline
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Yeah,...that makes sense. I'm just surprised that a 9-LED panel would overcurrent that circuit using the cargo lamp switch.... but not overcurrent it using the illuminated entry/key-fob.
I guess I'll have to use a relay and power it from a relay if I want to simply connect them to the wires leading to the cargo/3rd brake fixture.
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