I've been looking into a projector retrofit for the DRL/HB, and am interested in the Morimoto Mini HB LED Projector (https://www.morimotohid.com/morimoto...tor?quantity=1), I asked about the 6V/12V dual voltage and and was told the Mini HB LED would have no problem working so long as the system isn't pulse width modulated.
I've been digging and can't seem to find any info on whether the DRL/HB is a PWM system or not, and I'm not entirely sure how to go about finding out if needed--does anyone happen to know whether the 4G TL uses PWM for the DRL/high beam?
Thanks in advance!

 

This thread is super old, but the answer is yes the DRL system is definitely PWM. The MICU sends a PWM signal between 6-8 volts to power the bulb as a DRL, and flash-to-pass sends 12v battery voltage directly to the bulb for maximum brightness.

I just recently did my own projector retrofit with the Morimoto Bi-Xenon Micro 5.0 and decided to run a completely separate 12v power source from the fuse box to a separate button in the cabin to activate the new high beams. That allowed me to keep my normal DRLs and flash-to-pass halogen bulb but added bi-xenon high beam functionality