I have been pondering on this with my Civic Hybrid. It is alternatorless, using a dc-dc converter to keep the 12v battery alive. So at night, that is amperage draw pulling off of the hybrid battery, and that is current that is not being utilized to drive the vehicle, requiring more regen. If you think an alternator has draw, you oughta feel what happens to an already underpowered civic when it kicks in full regen. It does make for a nice engine braking effect when decelerating though...
Have you looked at swapping to an LED friendly blinker module? What model Chevy are you working on? I know my 03 Silverado had an electronic module on the back of the fuse block, but GM does have an LED friendly variant available.
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1986 Chevy C-10 10mpg Grandpa's Truck
2004 Chevy 3500 diesel 10mpg The work Truck
2003 Honda Civic Hybrid 5 spd ?? Mpg My Carbon Pentance
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