The gauges and the radio only work when the headlight switch is on and the high beam switch is held down

The grounds look fine any other ideas? Fuses are fine and relays click like they are working when wired to power and ground

I found this relay in the dash but couldn't get that green strap off and ran out of daylight but the battery wet dead and it started clicking and almost buzzing it was doing it so fast bit I put a stronger battery in it and it quit but I was wondering if that was the relay you were talking about it on the fat right side of the dash board

I got the gages and radio working! There were two things that we did that could have done it. Under the battery was a little box with a fuse in it and hot wires running in and out of it. It was caked in corrosion cleaned that up, then moved to the fuse box cause we saw some corrosion dust that had fallen into sight. So we unbolted it and there were two plugs one black one gray, one of the wires going into the gray one was cut and caked with corrosion. So we spliced in some wire and redid the plug and put it back together and everything in the cab seems to be powered well. Then I try the headlights and they work but the highbeams don't. The highbeam indicator is constantly on and when I switch from low beam to highbeam the lowbeam cuts off leaving only the yellow running light on. I checked the bulbs and they look bran new the connectors looked like they were recently replaced. But I'm at a loss with the headlight the grounds are as clean as can be the fuses and relays are fine and the little power distribution box got a good cleaning. What should I do next?

Thank you for your time any help is greatly appreciated!

Ok that headlight relay is next to the battery kinda inside the body right? I have a hard time reading the diagram.

Or does it come off the mane under hood fuse box