Well, one at a time... 1. The horns. They go bad after a while. Easy way to test is to remove them from the bike, take a known good 12V battery, and jump it directly to the leads on the horn. It honks or it don't. If they're bad, you can buy new Motorcycle horns. $80 from the dealer, or $105 for cheap looking aftermarket from JC Whitney. No thank you! I bought some standard 3.5" horns from the autoparts store. Some primer, and a can of black paint. Several light coats and a spot of wet sanding and it came out looking pretty nice. If you're really careful it's also completely possible to pry the "chrome" plastic trim from the old horns and snap it onto the new ones.
2. Brake light. Tail lights should always be on, by design. The bulb is actually a two filament bulb. One one for tail light, both on for braking. That way it gets brighter. Make sure that both filaments are good and that one isn't blown. The fix could be as simple as a new bulb. If that's not it, check the switches. There's one on the handle bars, and one down behind the foot brake. They should be normally open switches. Infinite resistance when off, 0 resistance when applied. Make sure no wires are cut, etc. 3,4,&5. Turn signals. I'm going to put these all in one category because I think there might be a common problem. The fronts are 3 wire. They are lit steadily when the bike is on to make it more visible. They only blink on/off when the turn signal The Dark Green wire is ground, The solid (orange/blue) is the blinker wire, and the white-striped wire is the solid running light wire. The rears are just 2wire. They're off usually, I guess you don't need to be as visible from the rear... they only illuminate when you're blinking. Easy enough to test. Remove one and put the two wires to a 12V battery. It lights or it doesn't. Same with the Fronts, apply power across the striped wire and the dark green and you should see light, then test with solid color and dark green, again you should see light. I'll assume your turn signal switch is working since it does turn the lights off, but we can test that too. I'm going to make a prediction though, and start pointing fingers are the turn signal relay, behind the left side cover on your bike. I never found a way to test mine, I just figured it was bad by process of elimination. But it was bad, I picked up a replacement from a honda shop and all lights started blinking. I'm not guaranteeing that your relay is bad though, don't go out and buy one until testing the other parts. I have a scanned in jpg of the wiring diagram for the 650 on my site. Word of warning, it's from the Clymer manual and some of the colors are wrong, especially around the starter button and the gear indicator switch, but it's better than nothing... http://munz.kicks-ass.net/nighthawk/?attachment_id=105 Good luck ;) -Kyle On Tue, Aug 10, 2010 at 11:05 AM, AustinPothast <austinpoth...@yahoo.com>wrote: > 1985 Nighthawk 650 > I know I'm not the first to post this problem but I need some easy to > digest suggestions as I am a beginner with electrical. Here are my > problems: > 1. Horn does not work > 2. Brake light does not work when braking (although the tail light is > always on) > 3. Rear turn signals do not come on at all. > 4. Front turn signals come on > 5. When I try to use the right turn signal that signal just turns off; > same with the left. Again this is front only because the rears do not > come on. > > I have replaced all '15' fuses on the front of the bike above the horn > and inspected all wires for exposure. > > Please help me with step by step of what you would do? > > Thanks! > > Austin > 734 218 1653 > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to nighthawk_lov...@googlegroups.com. > To unsubscribe from this group, send email to > nighthawk_lovers+unsubscr...@googlegroups.com<nighthawk_lovers%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to nighthawk_lov...@googlegroups.com. To unsubscribe from this group, send email to nighthawk_lovers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
