If I’m reading this correctly it looks like power comes from the battery + to the fuse panel (Red Wire) and crosses a 15 amp fuse. It then leaves as a Red/White and goes to two places, it changes color to Red in the ignition switch harness and leaves as a black. Also the Red/White goes to the rectifier and leaves as a Black which appears to tie into with the black from the ignition switch. There are a number of things that get power from this black wire as there are many junction points. It appears that the horn gets power directly from the Black wire, and the second fuse (7 amp) gets its power only after it has passed through the starter switch as a Red/Black. From that fuse power goes to the dimmer switch coming in as a Yellow/Black, and leaves as either White (low Beam), or Blue (High Beam), the blue continues on to the high beam indicator light in the gague cluster. Now in diagnosing the ground for the horn it is missing something on the diagram. It shows a second Black leaving the horn and going to an empty bulkhead plug. I suspect that should connect to the missing Green on the horn button. Which makes sense since the Dark Green on the horn button goes to the headlight Dark Green – wire. I can’t tell how it grounds from there (looks like another missing wire) but it appears there are two frame grounds one by the headlight bucket, and another somewhere else probably under the tank, or near the battery. I would feel fairly confident that your issue is simply a bad ground to the frame look for both of them and clean them up real well.
On Tue, Jun 26, 2012 at 10:53 PM, [email protected] <[email protected]>wrote: > One qors of warning,however: make sure the ground is on the frame and > not before the head bearings. If the juice has to travel across the > bearings it will likely cause pitting and hence premature wear of the > bearings and their races. > > *Sent via DroidX2 on Verizon Wireless™* > > > -----Original message----- > > *From: *Glenn Evanish <[email protected]>* > To: *[email protected]* > Sent: *Wed, Jun 27, 2012 02:30:27 GMT+00:00 > * > Subject: *Re: [Nighthawk Lovers] Re: Electrical Idiot > > Corey, > > If you look at your battery on your bike, it of course has a + and a - > terminal, as all batteries do. Ever notice where the wire that bolts > onto the - terminal goes to/comes from? It's probably about 4 inches > long and it just bolts onto the frame of your bike. In other words, it > "grounds into the frame." This means the - (ground) wire on your > headlight could travel all the way back to your battery's - terminal, > like a flashlight, but that just means it's going to end up going down > that 4-inch wire to the frame from there. What's the point when you've > got frame up in the front by the headlight bucket, too? As long as the > ground wire touches metal (not paint) on the frame, you can "ground the > headlight to the frame." > > Make sense now? > > Glenn (EGrider) > > On 6/26/2012 2:08 PM, Cory Crawford wrote: > > Thats perfectly described and understandable for me gevanish thanks. Ya > > I tested the headlight by sticking some wires into the connectors on the > > back of the headlight and then connecting the wires to the battery. > > still a little confused by all the ground talk but I'll just try and > > follow your advice word for word and see what happens. When you say the > > ground you take off the frame what does that mean? Thanks for your > > answer though I'm gonna try this... > > > > On Tue, Jun 26, 2012 at 5:25 AM, EGrider **> **> wrote: > > > > A little while back, the headlight on my NH just stopped working, > > both high and low beams. You say you tested the headlight and it > > works. So did I. I'm going to assume that this means you got the > > headlight and 2 pieces of wire and touched them directly to the > > battery, yes? That should mean you have already figured out which > > connectors on the bulb are + and which is the ground, even if you > > don't know which is high or low beam. Next you need to attach a wire > > to the + on the headlight connector in the headlight bucket to take > > power from it. The ground you take off the frame, not the push-on > > connector. Run a ground wire from the bulb to the frame or back to > > the ground on the battery if you have a long-enough wire. See what > > happens. In my case, the bulb came on, which meant my ground was bad > > on the push-on connector to the bulb even though it looked fine on > > visual inspection. I cleaned and jiggled and pushed on the ground > > until it was making contact again and viola! working headlights, > > high and low! Your mileage may vary, but that's my story. Now I'm > > an electrical semi-idiot. > > > > > > On Monday, June 25, 2012 5:30:25 PM UTC-4, clkcrawford wrote: > > > > I'm an electrical idiot. Never gotten my hands dirty in my life > > UNTIL I bought my 1985 Nighthawk 450 a couple weeks ago. Wasnt > > running and now its running like a champ thanks to forums like > > this and the Clymers. Now the last two things that I CANT figure > > out. My horn and headlight are not working. Already tested horn > > and headlight individually so I know its not a problem with > > them. I have tried studying and analyzing the wiring diagram in > > my clymers and it might as well be instructions to deactivate a > > nuclear bomb thats written in german. I have no clue what it > > means and the only time I've tried messing around with stray > > wires sparks flew like 4th of July and I burnt my fingers. > > SO...my question is this..where do I start and what do I check? > > You might have to use caveman language with me because even > > "check the terminals for a bad ground" means absolutely nothing > > to me cause I have no clue what those are. Only shop around in > > my area that will do the electrical on this wants $90 an hour > > just to look at it. Trying not to go that route. I apologize for > > my idiocy but I'm sure most people understand that everyone use > > to know nothing and that happens to be the stage I am in. If you > > need more info let me know I can post and reply pretty quickly. > > Thanks and I'll post some pics too if need be. > > > > > > On Monday, June 25, 2012 5:30:25 PM UTC-4, clkcrawford wrote: > > > > I'm an electrical idiot. Never gotten my hands dirty in my life > > UNTIL I bought my 1985 Nighthawk 450 a couple weeks ago. Wasnt > > running and now its running like a champ thanks to forums like > > this and the Clymers. Now the last two things that I CANT figure > > out. My horn and headlight are not working. Already tested horn > > and headlight individually so I know its not a problem with > > them. I have tried studying and analyzing the wiring diagram in > > my clymers and it might as well be instructions to deactivate a > > nuclear bomb thats written in german. I have no clue what it > > means and the only time I've tried messing around with stray > > wires sparks flew like 4th of July and I burnt my fingers. > > SO...my question is this..where do I start and what do I check? > > You might have to use caveman language with me because even > > "check the terminals for a bad ground" means absolutely nothing > > to me cause I have no clue what those are. Only shop around in > > my area that will do the electrical on this wants $90 an hour > > just to look at it. Trying not to go that route. I apologize for > > my idiocy but I'm sure most people understand that everyone use > > to know nothing and that happens to be the stage I am in. If you > > need more info let me know I can post and reply pretty quickly. > > Thanks and I'll post some pics too if need be. > > > > -- > > You received this message because you are subscribed to the Google > > Groups "Nighthawk Motorcycle Lovers!" group. > > To view this discussion on the web visit > > https://groups.google.com/d/msg/nighthawk_lovers/-/UWqJe6HaiFAJ. > > > > To post to this group, send email to > > [email protected] > > **. > > To unsubscribe from this group, send email to > > [email protected] > > **. > > 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 [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > 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 [email protected]. > To unsubscribe from this group, send email to > [email protected]. > 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 [email protected]. > To unsubscribe from this group, send email to > [email protected]. > 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. 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