delta_p
OBS Chevrolet, When Silverado Was A Trim
OK, from the look of the heat fins on it I assume they add some load resistance in there to keep the wattage around what a halogen bulb would be. This would fix any otherwise issues with lamp monitoring circuitry and keep the loads and currents within what any monitoring would expect. If the OP has bulbs like that then what I thought was the problem is not the problem.