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Led replacement 1994 cutlass convertible


jmjp5055

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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.

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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.

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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.

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