After almost a year trying several types of LED lamps and flashers to function on my 1960 MK1 BN7 that has a positive ground system; I finally found a solution. Using the LED lamps from Classic Auto LEDs, LLC along with a Tridon EL-13 flasher and 2 RL-650 load resistors from Super Bright LEDs >> I now have fully operational LEDs on both front and rear lights. Flasher is completely functional, to include the panel light.