WTF??? Lights with CAN bus???

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Offline Rx7man

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Offline me78569

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Re: WTF??? Lights with CAN bus???
« Reply #1 on: March 24, 2016, 01:17:51 PM »
a lot of the new rams have some sort of canbus system that watches the lights for being burnt out. 


The LED's don't have enough resistance to fool the system into thinking the lights are on, so you get errors on the dash.   
2000 Dodge 2500 quad-cab 5.9 Cummins slt, homebuilt 47re revmax 3.5 messed with vb, Quad adr iquad, 4" tbe , pureflow 150 gph. he351ve in the works 100hp DFI inj

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Offline Rx7man

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Re: WTF??? Lights with CAN bus???
« Reply #2 on: March 24, 2016, 02:52:37 PM »
I see... I wonder how the connections work.. bulbs shown seem to only have 2 poles, which would be power, what about comms?
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM

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Offline me78569

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Re: WTF??? Lights with CAN bus???
« Reply #3 on: March 24, 2016, 06:44:37 PM »
I think the canbus system just watches resistence on the wires, I dont think it actually talks to the bulbs
2000 Dodge 2500 quad-cab 5.9 Cummins slt, homebuilt 47re revmax 3.5 messed with vb, Quad adr iquad, 4" tbe , pureflow 150 gph. he351ve in the works 100hp DFI inj

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Offline Rx7man

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Re: WTF??? Lights with CAN bus???
« Reply #4 on: March 24, 2016, 09:38:49 PM »
OK.. so they basically have a heater in them to fool the CAN bus... there's some good engineering!
'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM

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Offline me78569

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Re: WTF??? Lights with CAN bus???
« Reply #5 on: March 25, 2016, 07:27:50 AM »
pretty much.
2000 Dodge 2500 quad-cab 5.9 Cummins slt, homebuilt 47re revmax 3.5 messed with vb, Quad adr iquad, 4" tbe , pureflow 150 gph. he351ve in the works 100hp DFI inj