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Brake lights wiring for LED resistors

7996 Views 19 Replies 6 Participants Last post by  JoeyE
Hey all,

so I’ve been replacing my old halogen bulbs in my 2012 Fiat 500 Sport with LEDs (turn signals and brake lights done so far). I had no issue with the turn signals as the lights I got are Canbus ready. However, for my brake lights, I’ve been having issues with getting the car’s computer to stop warning me to “Check stop lamps”. I have some resistors which I did my best to install and wire up correctly using wiring diagrams I found online. These were the only two I could find for the external lights (courtesy of a post on this forum a few years back!) I think I got the left one wired up right, because when I put the LED on that side but kept the halogen on the right, the dashboard had no errors, but I must have messed something up on the right side because my dashboard lights up with the error once I put the LED in. I can barely read what it says for the right tail light wiring, but I thought I read “green/yellow” for RT STP LMP, so I wired the resistor to the black and green/yellow wires, which clearly wasn’t the right move. Anyone have any advice? Did I wire it to the wrong wires?
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