Well, I'm still working on installing a 12v distributor on our 14 and that's going well, I think. looking ahead at using the mag as a battery charging source using a diode and light bulb in the circuit. I'm hearing the bulb should be a #56. Haven't been able to find a #56. 1156,2056,3056, yes but ....I do find a #56 miniature bulb glass wedge base that's 5v. I can't believe that what I'm looking for. Thanks....J.