In my pursuit of illumination I'm discovering that all Lucas light fixtures may not be created equally.
I have the four round Lucas lights on the back of my Cobra and although these look alike there is a subtle difference between them that was part of the problem that I encountered. And it may also be due, in part, that all LED's are not created equally too.
1157 conventional incandescent twin filament bulbs work in all four Lucas lights. And my LED bulb of choice only works in two of the Lucas lights. There is just enough difference between the angle of the two terminals in relationship to the bayonet pins/grooves and also the height of the brass terminals within light fixture resulting in a poor/no/intermittent contact.
I'm taking a close look to see if it is resolvable. PITA
Here are the two LED lights I picked. The large one has 102 Surface mounted diode's (SMD)and is white light. I installed these under the amber front park/turn signal light. The smaller has 48 SMD's and is red. Two are Stop/Tail lights and two are Turn Signal/Tail Lights. Brightness is amazing. Now to solve the issues.