hey so i wanted to make my turn signals alternate (from bumper to corner) picked up a SPDT relay and hooked everything up that i can see properly.

+12V turn signal... terminal 86 of relay
Cut the corner lamp +12V lead. Attached the end from the car to terminal 30
Attached terminal 85 to a good GND.
Attach the lamp end of lead to terminal 87a

as far s i can tell it should work but they both blink at the same time not back and forth. I'm pretty sure im using the right relay and i spliced into the green wire for both the corner and the bumper light. Does anyone kno how to make this work? lol thanks Aaron