Lil' Blackbox

General => General Discussion => Topic started by: Rx7man on March 24, 2016, 12:27:23 PM

Title: WTF??? Lights with CAN bus???
Post by: Rx7man on March 24, 2016, 12:27:23 PM
This sounds really weird
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Title: Re: WTF??? Lights with CAN bus???
Post by: me78569 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.   
Title: Re: WTF??? Lights with CAN bus???
Post by: Rx7man 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?
Title: Re: WTF??? Lights with CAN bus???
Post by: me78569 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
Title: Re: WTF??? Lights with CAN bus???
Post by: Rx7man 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!
Title: Re: WTF??? Lights with CAN bus???
Post by: me78569 on March 25, 2016, 07:27:50 AM
pretty much.