Just wondering out loud, can the headlights be wired so both low & high beam, are on at the same time?? I did this to my Chebby truck and it makes a hugh difference in the ability to see at night. Slant Six Dan, where are you???
Of course they can, but there is some controversy as to legality and whether the lamp life will be shortened.
Just wire directly from the center of your dimmer to the low beam wire, so it stays hot anytime the headlight switch is on.
In other words your dimmer now becomes a simple on/ off switch, two terminals used. It simply turns the hi beams on/ off.
Back in the "quad light" (B body) days of the last century, I used to use 4537 landing lights. People didn't argue with those. Those who thought they'd lost the dimmer switch.....found it again!!