A classic truck owner can and often does go to a lot of effort to upgrade their vintage truck's electrical system. For the guys with the mid-'50s trucks down this means ditching the 6-volt system with fat garden hoses for wires, and literally stepping up to a 12-volt system. The next step, and it's usually done when the switch is made to 12-volt, is to lose the generator and opt for an alternator. The reason to do so is generators do not start charging until the engine is well off of idle and starting to turn some revs. An alternator, especially an aftermarket upgrade model, is engineered to crank out enough 12-volt juice at idle so a guy can slow poke around all day and still have a fully charged battery. OK, this is all well and good, but what about those crusty old sealed-beam headlights with the tungsten elements and the Fresnel lens? It's true back in 1940 when the '40 Ford Deluxe first offered sealed-beam headlights it was a great improvement over the earlier types, but things have progressed in the last 69 years. The best way to pick up a lot more candlepower to illuminate the road and reap a cosmetic upgrade in the deal is to switch over to crystal-clear halogen headlights with parabolic lenses. The crystal-clear halogen headlights we used in this story were sourced from the fine folks at LMC Truck of Lenexa, Kansas. Because LMC Truck is a real stickler for selling products that are street legal in all 50 states, the headlights come with a high-efficiency 12V 60/55-watt replaceable bulb. For those of you who intend to use your classic truck for off-road use only (wink, wink) 12V 90/100-watt replacement bulbs are available through off road supply houses. Of course, with all the brand-new cars being sold with retina burning headlights we doubt 90/100s on an old pickup truck will ever be noticed. There's a good chance LMC Truck has a full-page advertisement somewhere in this magazine that lists an application for your truck. For this tech story we used the most common size headlight in the whole world for trucks from 1940-79, a 7-inch bulb. It's a pretty easy swap, but there are few places where a guy can screw up, so pay close attention the following captions and you should be fine.