Headlights and Front turn signals not working

All, During the past 6-months I pulled my engine, had it rebuilt and reinstalled it in my 1974 duster. After fighting with header & exhaust connections and chasing a few oil leaks, it is now fully back on the road and the engine runs/pulls well.
Before the engine removal all electric lights and gages worked fine. However, during the engine work some wiring has either been damaged or loosened as I have been having problems with both the Temp and fuel gages(both are the factory original types) working consistently but more importantly,... I just realized that all my front grill lights do not work. All other lights seem to be fine (internal & dash lights, rear taillights, rear turn signals, brake lights, marker lights, and the front fender top mounted little turn indicators). Is there some major wiring connection that would affect everything across the front grill? (I'll double check all my fuses tomorrow but I just noticed this as I was returning to the house at dusk this evening and realized my lights were not working.)
THX-Scott