Tailight but no brakelight on 83 honda 550?

I have a 1983 honda nighthawk 550. The brakelight works fine but there's no tailight. And the tailight light is on, on the instrument panel. How can i fix this? Is it a fuse?

Can i use Smal motorcycle battery on a big motorcycle?

I have honda cbr 500f with a 100 percent dead battery and my question i can i use small 4 ah battery from my scooter on it, will it overcharge it or damage the voltage regulator or the alternator, do i have anything to watch for? (even if the small battery can't start bike i will give it a push…, I'm interested will it work)?

Added (1). Ok so the reason for the old battery failing was that the voltage regulator failed and shorted the battery, Now i mounted a new one, Bike starts fine with the small battery and it recharges fine but it overheats the new voltage regulator after a minute of running on idle. I even tried to add a ground line directly to the battery and it still overheats

New regulator ->> http://extraimago.com/image/1G1
Old Regulator ->> http://extraimago.com/image/1GE

What is wrong with my motorcycle? - 1

I have a 2002 honda shadow spirit 750. Sometimes when i start it i have to hold the start switch for like 6 seconds for it to fire up. It seems to happen after i ride for a while then take a break. I only seems to happen when i use the choke, if my bike is still warm enough to start up without the choke it usually fires up pretty quick. Also i use the choke in the morning and it starts up pretty quick. So it seems to only happen after i take a 30min-1hr break after riding for a while. Does this mean that my starter is going bad or what?

Motorcycle servicing

Motorcycle servicing Help? - 1

Added (1). I purchased a new Honda cbf 125 last June, it was serviced in the September before 500 miles, I was just wondering when does it need servicing again. Is it at 2000 miles or every 6 months it should be serviced.

What's a good beginner motorcycle for someone with little riding experience?

I'm a junior in college and have been wanting a bike for a long time, so I plan on hopefully getting one after I graduate. I've had some riding experience in the past, (I owned a Yamaha YZ85 dirt bike when I was 14 or so, and my older brother had a Honda CR250R that I would ride occasionally) but nothing very significant. What are some good, solid bikes that would suit a beginning rider? I wouldn't be doing too much with it… Maybe driving it to work and taking it out on the weekends for fun. Two bikes I really like are the Yamaha FZ-07 and the Harley Iron 883. What are your thoughts on these two bikes, and which, if any, other ones would you recommend for someone starting out?

Missing choke lever on my motorcycle?

I have a Honda nighthawk 750 when I bought it it wouldn't start at all so I bought a new bartery it. I got it to ru and I rode it never for a bit never aking it out of second gear. Then it died and I can't get it to start since. Don't know if it's stuck in the on position or what, it has the attached cable and a jammed spring where the lever should be and I can't seem to find the parts I need, know any websites to where I can find a lever or can I ride without or hell is there a trick so I don't need the lever at all?