![]() ![]() The first solution is adding a resistor in parallel to the wiring to the LED bulbs, thus increasing the power load to fool the BCM into thinking it has working incandescent bulbs. This makes the BCM think the bulbs are blown, and it switches to rapid flashing as a way to warn the driver that indicator lights are not working. The problem is with the extremely low power that LED lamps draw compared to incandescent lamps that the BCM is designed for. The sound of the flasher from the dashboard is artificially generated. ![]() My Raptor apparently also does not have a real flasher the flashing function is managed by one of the computers in the truck, the Body Control Module (BCM). On researching this on the F-150 forums, I found this phenomenon is very well-known, and actually has a name: "hyperflashing". On putting them in, the turn signals started flashing too rapidly, like they do when a bulb is blown. I picked up LED 4057 turn indicator bulbs (white for parking/indicator front, red for tail/brake/indicator rear) for my 2012 Ford F-150 SVT Raptor. ![]()
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March 2023
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