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Join Date: Dec 2005
Location: Allentown, PA
Posts: 1,260
If the new flasher hyperflashes and the correct lights blink on the outside, then the flasher is sensing low current like the bulbs are flashing through the running light filaments. This could happen if the bulb sockets are not grounded. I assume you have 21W incandescent bulbs in all 4 corners.

To see if what I suggest might be a bad ground, look closely at the lights when they flash to be sure just the high power filament is lighting up. Does the hyperflash change when the headlights are turned on?
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Old 11-11-2022, 11:30 PM
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