Just noticed the right side light is very dim compared to the left. I took the light out of the headlight and put it in the left side and it is very bright. I also notice the left side dims, but the right side stays the dim light at all times. I have a grounding issue or a short. Does anyone have any suggestions, a headlight wiring diagram would be helpful, or any help.

 

Thanks

Check the connectors that the lamps fit into, sometimes they deteriorate over time. For what it's worth, here's a thread from a few years back:

 

http://www.ultimatesubaru.org/forum/showthread.php?t=41301&highlight=headlight+connector

just fixed one. one of your plugs are going bad. either replace or cleanup, either way use some dielectric grease for a better connection on both.

Fuse in the underhood fusebox for the right headlight is bad.