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RZNT4R · 09-12-2019, 02:45 PM

7443 = 3 wire
7440 = 2 wire

You can shove a 7440 bulb in a 7443 socket and it'll work, you can shove a 7443 in a 7440 socket and it'll work (on just one intensity). Buy whichever you want and wire it however you want, it doesn't matter with these.

09-12-2019, 02:45 PM	#4
RZNT4R Professional Mechanic Join Date: Apr 2010 Drives: 2017 86 6MT Oceanic Location: Quebec, Canada Posts: 789 Thanks: 17 Thanked 634 Times in 371 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	7443 = 3 wire 7440 = 2 wire You can shove a 7440 bulb in a 7443 socket and it'll work, you can shove a 7443 in a 7440 socket and it'll work (on just one intensity). Buy whichever you want and wire it however you want, it doesn't matter with these.