billforbush said:
Thank you all for your help. The phenomenon happens whether the HLF is on or off. I will switch to a 1250. Thanks again and happy new year
Bill
This occurs because of how the flasher is designed and the program code that is running on it continuously. Whether the flasher is on or off, the program is always scanning for the ON input from the switch. When the switch is turned on, the driver's side high beam is fed first and the backflow on the blue wire triggers the program to turn on the pax side headlight. That delay is what you are noticing. Relay flashers share the same input from the switch and the power exits each relay and goes to each headlight. There is no monitoring of one side to trigger another side.
The drawback to switching to a relay flasher is the clicking noise and because of the moving parts, higher failure rate due to mechanical linkages moving as opposed to non-moving solid state parts like the flasher you have.
On a side note, our programmable flasher does everything the UHF2150A does and more. $40 for ELB members (ELB-ERM code). Our solid state flashers should be out in about a month and also does not have this delay concern
SOS's flashers have. You can see more info
here. Let me know if you have any additional questions.
Tony