jmjp5055 Posted August 17, 2018 Report Share Posted August 17, 2018 Do all lights need to be replaced at the same time in dash and other bulbs when converting to LED? Quote Link to comment Share on other sites More sharing options...
rich_e777 Posted August 17, 2018 Report Share Posted August 17, 2018 IIRC only the resistance is reduced in an LED circuit so you should be ok to change out a few at a time, willing to accept being corrected here because IIRC. Quote Link to comment Share on other sites More sharing options...
Imp558 Posted August 18, 2018 Report Share Posted August 18, 2018 You'll run into trouble with LED turn signals not drawing enough power to blink the flasher Quote Link to comment Share on other sites More sharing options...
crazyd Posted August 21, 2018 Report Share Posted August 21, 2018 If you do the turn signals you'll definitely need to do the EP28 flasher upgrade. If you change the CHM brake lights it'll break the ABS. You don't need to change all the lights in the dash at the same time, in fact keeping a few incandescents around helps keep the resistance up. I wouldn't bother changing the notification/warning lights, only the backlights. If you change too many it'll start doing weird stuff - backfeeding circuits, etc. Proceed with caution. Quote Link to comment Share on other sites More sharing options...
Imp558 Posted August 21, 2018 Report Share Posted August 21, 2018 LEDs are omnidirectional, no backfeeding. This does create a problem if the front side markers are in that crazy "reverse polarity at night" configuration like my Regal. My solution was to put the coil from an Omron relay on the two wires, and then use the relay contacts to switch my LEDs. I had to run power and ground to both lights. rich_e777 1 Quote Link to comment Share on other sites More sharing options...
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