The DRLs on the wifes Chevy Cavalier run the high beam
bulb at a lower voltage than when the lights are turned on.
This car also turns the DRLs off when in park, or when
the E-brake is up 1 click as well.
You might be able to find the relay that controls the
DRLs and wire in a switch to turn them off, but remember
Japanees cars run the wires all hot, and turn on a circuit
by grounding it, gets real confusing when tracing wires
and they all show voltage on your meter. :-/