Antline switchback LED bulbs
Switchback LED bulbs glow white as running lights and switch to amber when you hit the blinker. A dual-colour upgrade for front turn signals, in 3157, 1157 and 7443 sizes.
What is a switchback LED bulb?
A dual-function bulb: the low circuit lights it white like a DRL, the turn signal circuit flashes it amber (yellow). It needs a dual-filament socket — usually the front turn signal with a parking light.
Are switchback LEDs legal?
White running lights at the front and amber signals are standard on most vehicles; check your local code if you are unsure.
Fast blinking?
Add a load resistor per bulb to stop hyper flash after the upgrade.
Not sure which base? Socket help · bulbs@antline.pages.dev