66 c10 electrical issue

[Chevy nutcase]

Was finishing up some loose ends so Pennsylvania can finally declare my truck road worthy and in fixing one thing I've upset another. I noticed the marker lights in the hood no longer work. I'm getting no power at the firewall plug for the marker lights or turn signals. I wasn't messing with that region directly but I'm wondering if reinstalling the vent and heater control after a rebuild hit some related wiring.