so on the usdm lights, on the corner marker there is 2 lights, one always stays on as the running light and the other one blinks when you put on your turn signal. on the jdm lights, is there only 1 corner light instead of 2 like on the usdm ones??
That is correct. It is done that way because JDM cars have sidemarkers that take the place of the second bulb.
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Yep and out of the 2, the 1 that does not blink is the only 1 that fits in the 1-pieces. If you wanted it to blink you could swap the connectors.