00 Toyota 4runner no headlights daytime running light work fuses good new switch new main relay not receiving ground to activate manually pull back switch high beam works any ideas?

WOW! That's weird. But then this is electricity and its weird by nature. Yet it also has rules and the thing I get most is that the simplest answer is usually the best answer. You have a connection that either burned came loose OR a wire has broken or been cut. Question is where is it, the connector or the wire?

The fact that the lights come on when you pull back the lever means you have everything necessary for the system except a path with the switch on. Check the connections to the switch and the lights and ensure they are on then look for a loose connector somewhere, probably by the feet or in the engine. Mine was behind the glove box. Move them around with the lights on and see if anything happens.