if youre using an led, youll have to solder in a resistor so that you dont get hyper blinking.
but since its made to take the place of a dual filament bulb, yeah, it should work just the same as the bulb would.
I should have the hyper blinking covered since I replaced my flasher unit already.
if all you're trying to do is keep the corner from lighting up during the dim running light mode and only come on during the bright blinking mode, its super easy.
look at the base of the bulb, there are 2 contacts, put a piece of electrical tape over one of them and it'll turn off that particular light, just test to see if the one you have covered is the bright or the dim contact. this way you dont have to cut any wires so you can always revert back to a halogen bulb.
i have the exact same thing done to my tails. my upper corners dont light up at all until i hit the blinkers.
both contacts at the bottom of the bulb are positive one engages the dim mode, one engages the bright mode, the ground is the entire side of the bulb.
Here is the bulb I am using in my tails:
Since there are four points of contact, are you saying I cover two of the wires on one of the long sides?