1994 honda magna turn,brake and neutral light stopped working

willie1187 · July 01, 2011, 04:50:31 PM

Hi there, hoping someone can help.
The other day my turn signals, brake and neutral lights stopped working. Head light and high beam/highbeam indicator lights still works fine. I check the fuse(s) and not sure where else to look. Everything worked fine a few days before and this is the first issue I have had with it. Could a burned out cause this? Checking all bulbs next!

lragan · July 01, 2011, 08:24:14 PM

If you don't find it, consider the wiring harness. Remove the seat, and examine the wire connections just behind the battery box. There are six push fit connections there, in two groups. One of them has two wires on the tail side. Make sure they are clean and not corroded.

If you have ever had a battery boil over, it is possible that these connections were affected.

Good luck. Let us know what you find.

Magnum Magna · July 01, 2011, 09:17:15 PM

Check your fuses again. I believe those are the exact things went out on my trip to SD. Stopped to get gas and check the fuses and one was open.

hootmon · July 01, 2011, 09:29:08 PM

willie1187

What MagnumMagna said.. You might want to check them with a volt meter and make sure the connections are clean where they connect in.

willie1187 · July 02, 2011, 01:14:53 AM

Thanks for the reply's guys. Will check again on the fuses and will check out the wiring. Will keep in touch till I solve this issue as the weather is finally getting nice out and I want to ride soon!

Magnum Magna · July 02, 2011, 05:56:38 PM

I pulled my 15 amp fuse killed all three.
From left to right 15 amp then next three are 10 amp.

I'm not saying it is the 15 amp fuse but it is definitely in that line of the 15 amp fuse.

willie1187 · July 07, 2011, 10:42:55 AM

Thank You guys!, but now I feel like and idiot

Yes it was the 15 amp fuse. I guess I didn't look at it carefully enough the first time. However I was able to replace and get some riding in. Then guess what! It blew AGAIN! GRRRRRR
Hmmmm all of a sudden I'm blowing fuses? Been riding this bike for the last 5 yrs and haven't had no issues. Hmmm gonna REALLY scratch my head on this one.

Magnum Magna · July 07, 2011, 10:59:09 AM

When it opened up on me it was very hot 105+ and moving very slow. So I wonder if the fan is on that fuse.

guywheatley · July 07, 2011, 11:04:01 AM

Sounds like you've got a short somewhere, going directly to ground. Start checking wires. While it could be in the wiring harness, I'd start looking at wires outside of it first. I'm betting you find something with the insulation rubbed off making intermittent contact with the frame, or some other grounded member. Look especially close at any wire that goes through an opening, or is draped over a metal part.

willie1187 · July 07, 2011, 10:37:57 PM

Will do ! Thanks Guy!

hootmon · July 08, 2011, 05:49:20 AM

Since it's your turn and brake lights, ALSO check the wires feeding those items.. Start at the light bulb and work back to where it goes into the harness.. It more than likely, like Lawrence said is more on the fringe of the harness than the middle of the harness..

tedkraus · July 10, 2011, 05:38:50 PM

Even if you don't have a short per say if your connections are corroded that could also be causing the problems. You can polish your connections with a steel wool or something and then use some dielectric grease, this will decrease your resistance if you can't find specific short.

lragan · July 10, 2011, 08:00:47 PM

Quote from: tedkraus on July 10, 2011, 05:38:50 PM
Even if you don't have a short per say if your connections are corroded that could also be causing the problems. You can polish your connections with a steel wool or something and then use some dielectric grease, this will decrease your resistance if you can't find specific short.

Corroded terminals typically result in an open circuit, not a short. If the fuse is blowing, it is likely that insulation is worn, chafed, or cracked at some point and the current is getting to the frame. May be hard to find, since it happens only rarely. My guess is that it happens when you go over a bump such as a speed bump or cattle guard.

tedkraus · July 11, 2011, 10:10:13 AM

Quote from: lragan on July 10, 2011, 08:00:47 PM
Quote from: tedkraus on July 10, 2011, 05:38:50 PM
Even if you don't have a short per say if your connections are corroded that could also be causing the problems. You can polish your connections with a steel wool or something and then use some dielectric grease, this will decrease your resistance if you can't find specific short.

Corroded terminals typically result in an open circuit, not a short. If the fuse is blowing, it is likely that insulation is worn, chafed, or cracked at some point and the current is getting to the frame. May be hard to find, since it happens only rarely. My guess is that it happens when you go over a bump such as a speed bump or cattle guard.

yes it is less typical, looking for a short with an electrical meter checking for continuity would be a good start, if that fails check for resistance and you may see what was describing. I have seen this happen on a car because corroded terminals have higher resistance this leads to the circuit drawing to much. Also if you are in need of an electrical meter you can probably pick one up locally at a hardware store or online (ebay or amazon) for under $20

edited for correctness

lragan · July 11, 2011, 01:37:43 PM

Suggest you re-examine your math. If V is fixed, and R increases, current MUST decrease, not increase.