Hello all,
First post on here, used the forum a few times to solve a couple issues. Just thought I would share my experience with using a simple way to use a single filament bulb the same as a dual filament bulb. This was used for a set (2) single filament bulbs on the front of a vehicle, not the tail lights. I used one 15 Ohm resistor in my setup with 2 led bulbs. This may change to match your original dual filament bulb brightness. Any diode that prevents 12V from back feeding into the original circuit will work I believe.
First post on here, used the forum a few times to solve a couple issues. Just thought I would share my experience with using a simple way to use a single filament bulb the same as a dual filament bulb. This was used for a set (2) single filament bulbs on the front of a vehicle, not the tail lights. I used one 15 Ohm resistor in my setup with 2 led bulbs. This may change to match your original dual filament bulb brightness. Any diode that prevents 12V from back feeding into the original circuit will work I believe.