The subject of improving headlamp performance of the Tundra has been discussed many times on this forum. So after perusing the plethora of threads on remedies I concluded that building my own heavy duty headlamp harness suited my individual needs. See my post from "What headlight bulbs are yall running?" thread below.
The results are dramatically improved headlamp performance and enhanced night seeing. Overdriving my headlamps is NOT a concern anymore.