1995 Geo Metro Dim Headlight

Electrical problem
1995 Geo Metro Front Wheel Drive Manual 155000 miles

The passenger side headlight comes on but is dim, even with the brights on. I figured it must be a ground. The only wiring diagram I could find was for a Suzuki Swift, but that should be right, shouldn't it?
Any way I found and cleaned the grounds I found behind the headlights on both sides, though they looked good in the first place. I also cleaned the battery terminals just to be sure. Looking at the wiring diagram there are 2 boxes under the hood for fuses and relays I think.
Could one of these be bad? How can I check them? I've already replaced the bulb. Everything else seems to work just fine on this car. Any help will be Greatly appreciated.