When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I Bought these Sirius LED Rear Turn Signals in Red to test if the built in Anti Hyper Flash works without using the flash relay module and it does! I chose the red color to match the red led built in tail light of the car. they look great and very bright.
HOWEVER! I just answered my own question. Since 7440 Led Bulbs are *Single Filament* (7443 are Dual Filament and the only way you can get a switch back LED in our size) - While the 7443 will work in in the socket, there aren't 2 sets of contacts to power the *White* portion of the switchback LED, thus it will only function as an Amber turn signal and never *Switch Back* to white after the turn signal is switched off.
see link for Anti Hyper Flash LED Signal Lights (These will not hyper flash 100%):