Trying to get a new tail light PN(23025-0046) to work. The service manual says 12V lamp light. The new light says 13.5V 4.1/0.5W. Battery is at 12.26V. Continuity is good for the Blk/Y wire in the plug. Red wire at the plug only reads 11.64V. Blue switch wires work fine also. I'm no electrician, but do the new parts of 13.5V require that much to light it up? I've tried two different lamps and they don't work. Sincerely, Lost.