After reading around and getting a general idea of options and how this stuff works, I decided to buy these bulbs today while I was at a hardware store. They're 3 mr16 halogen floodlights, rated each at 20W and 12V.
I've never made a lighting system before, and my main goal here is to successfully build a good, working system. I'm not expecting perfection here, as I can always learn more stuff later on and build another system or improve an existing one later on. Main goal here is to learn, get practice, and build something that works decently. That being said, will these bulbs make decent headlights?
If so, how am I to mount these on my bike? What enclosure options do I have? Anything they sell at home depot? Fabricate something with PVC pipes (can they handle the heat?)?
I already know how to solder wires and connections, so I'm not too worried about that. Learned how to do that on electric guitars. Though any tips you guys have are certainly welcome.
I read somewhere that it's a good idea to use a fuse, so I plan on doing that. How do I know what fuse to get? Since I'm looking at running roughly 5 amps, do I get a 5 amp fuse? 7? 10?
Do I need to use a resistor if the batteries turn out to supply more voltage or amps than what the system calls for?
I'm a newbie here, so any help/advice is much appreciated.