I'm wiring my brother's bicycle with a Philips Rally H4 Bulb 12V 130/100W. He needs it for like 15-25 minutes everyday.Since I have only a 12V 7Ah battery and its insufficient for this bulb as it will drain the battery really bad and damage it. Also I'm not sure if it would be legal to use 130/100W(since at 12V it will be at the rated value ) on a bicycle. So I have connected the bulb to a 6V 10Ah battery. So the bulb wattage will be like 32.5W(current draw of 5.41A) & 25W(4.2A) at 6V and its quite bright in my opinion.I have a few questions:
1. Can I run both the filaments at once?(Total watts will be like 57.5W)
2. Right now I have connected it directly through a Universal Ignition Key Switch(3 wire-3 position), but it does heat up after running for 20 minutes.Do I need a headlamp relay?
3. Also what wire gauge would be the best? Right now I'm using 18 AWG I guess.
4. Will a 12V 10A fuse be enough?
1. Can I run both the filaments at once?(Total watts will be like 57.5W)
2. Right now I have connected it directly through a Universal Ignition Key Switch(3 wire-3 position), but it does heat up after running for 20 minutes.Do I need a headlamp relay?
3. Also what wire gauge would be the best? Right now I'm using 18 AWG I guess.
4. Will a 12V 10A fuse be enough?
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