Bens70w31 Posted April 2, 2021 Report Share Posted April 2, 2021 (edited) 1997 Olds Cutlass Supreme sedan Hello All..... just replaced front turn signal bulbs from incandescent 3157 (amber) to 3157 LED (ambers) I noticed the directional arrows on the cluster stay dimmly lit on the dash now with the LEDs . They both flash normally when I activate turn signals. Dumb question but I do not remember the directional arrows being dimmly lit in the cluster until I installed the LED's Is this normal, or do I have to 180 both bulbs (polarity issue) ? Or does the install of a LED front bulb cause a feed back to the arrows on the cluster? As always........many thanks in advance! --Ben Edited April 4, 2021 by Bens70w31 Quote Link to comment Share on other sites More sharing options...
Bens70w31 Posted April 4, 2021 Author Report Share Posted April 4, 2021 Update...replaced led bulbs for 2157 incandescents, and fixed problem. Must be a resistance/back feed issue with LEDs used in front blinkers. Quote Link to comment Share on other sites More sharing options...
55trucker Posted April 4, 2021 Report Share Posted April 4, 2021 If one wants to make use of LED turn signal bulbs then one must also replace the flasher with a low impedance item. The regular unit needs to see a load across the circuit so as to properly enable, seeing as LED's are extremely low impedance the regular flasher will not function as it should. Quote Link to comment Share on other sites More sharing options...
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