So I purchased a 1962 c10. Past owner had installed LED hood marker lights, tail lights. the head lamps are original. Here's the issues. Passenger Headlamp when on is dimmer then drivers. Rear taillights : The passenger is brighter then drivers. when turn signal is activated the passenger flash is brighter then drivers sides flash. Both hood marker lights are fine. (Both Bright) Could this be grounds? Truck still has stock wiring besides what might have been spliced to attach the marker lights an tail lights.