70 Swinger LED turn Lamps

So,,, have a mystery,,,,I am putting LED lamps in my 70 Swinger, I now have LED lamps in the rear [reverse, stop/tail] only, I tried that setup, did not work correctly. So got an electronic LED/Regular lamp 4 way flasher, and turn signal flasher to replace the original thermal flashers,,, works fine,,,,with standard 1157 lamps in front, and 1157 LED in rear.

Does not work with all LEDS in both front and rear. So,,,,,,,,,,,,,,,,,,,,I got a different Electronic flasher,, one a with Ground wire,, tried it with LED lamps in front and rear,, does not work. Then I did a bench test on that flasher,,,, connected a single standard lamp,,, it worked fine,,,, connected a single LED lamp, it worked fine,, connected both LED and standard lamp to flasher,,, they both flash fine,,with just one or two lamps,,,,,,,,,,,,,,,,,,,,,,, tried new flasher in flasher socket again,,, ran ground direct to battery,,,, no flash,,,,,,,,,,,,,,,,,I did not change the turn signal electronic flasher to the pigtail electronic flasher during all this,, started with 4 way flasher first, to make sure it worked , before doing turn flasher,,,,,,,,,,,,,,,,,,,What step am I missing ????

I have read the strings here,,, on a 71 Scamp and others,,,, some say to reverse the wiring at flasher,, I am no engineer,, but since the rear LED lamps work fine now, but the fronts when LEDS installed, do not, if I do a wire or polarity swap at flasher, will that maybe make the the front lamps work normal, but then the rear lamps will then not work ? I now am thinking rather than cut and hack things,, I could just leave 1157 LEDs in the rear, and Incandescent 1157 lamps in the front,,, so as to have the brighter lights in the rear. I could try,, putting original 1157 lamps in rear,, and 1157 LED lamps in front,, and see what does and does not work then,,,, Or, perhaps there is another type of flasher that works,,,,,?