Electrical Gremlins


Information and questions on GL1000 Goldwings (1975-1979)
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fatslob
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Motorcycle: 1977 honda GL1000

Electrical Gremlins

Postby fatslob » Tue Aug 02, 2011 3:52 pm



Hi, Just got my 1977 "Naked Goldwing" on the road. It passed inspection, but still have some kinks to work out. I had to have the gas tank coated inside and at that time the gas float was checked and I was told it was working. But when I started the bike it didn't work. If anyone has any ideas , I need help. I also have no neutral light, and my speedometer is really slow to respond. Are these inherent problems that older Goldwings suffer from?


Thanks for your time, Fatslob



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virgilmobile
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Re: Electrical Gremlins

Postby virgilmobile » Tue Aug 02, 2011 4:19 pm

34 YEARS OLD. It's great that it runs.

1st.does the temp gauge work?if not,look at the 7 volt regulator.If it does,short the float wires together,It should deflect the gauge full scale.

2nd.The neutral switch is on the right side front bottom of the block,partly behind the frame.It has 1 wire on it.Short it to ground and the light should light up.If not,check the light,if yes,fix the switch.

3rd.a slow responding gauge indicates dried up lube in the pivot points of the needle.Pry off the chrome bezel and lube.Re-crimp the bezel back.Don't try to remove the trip odometer knob(I damaged the insides prying on it)

GOOD LUCK

fatslob
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Re: Electrical Gremlins

Postby fatslob » Fri Aug 05, 2011 5:41 pm

Hi there, Fatslob here again. I got both the tack and speedo to work great by just lubing. After reading about having to literally move the engine to change the neutral sensor, I'll ride awhile longer without it. I replaced the regulator and this had no effect on gas or temp gauge, they still don't work. I am not that handy with electrical stuff, but my son is. Everything else works fine, lights on the two gauges work (gas-temp). Could the rectifier be the culprit?, or is it just a bad ground somewhere.I'm getting to the point of taking to our local Honda dealer and see if he can solve the problem. I also would like to change the spark plug wires, do I have to change coils also?

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virgilmobile
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Re: Electrical Gremlins

Postby virgilmobile » Fri Aug 05, 2011 11:45 pm

plug wires screw into the coil and plug cap.auto parts store has "cut your own length"wires available.Can I assume that neither the gas or temp gauges work?So does the oil pressure light work?the power to it also goes to the 7 volt regulator.It's a 5 amp fuse.Test probe the regulator leads 1 is 12 volts 1 is ground and the last one is 7 volts to the gauges.Either use a test light or a volt meter

fatslob
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Re: Electrical Gremlins

Postby fatslob » Sat Aug 06, 2011 9:54 am

Thanks for the reply. My '77 Honda doesn't have the "cluster of gauges" as it's an original "naked" goldwing. Is the fuse block able to be opened to visably check the 5Amp fuse? Should I stay with 8mm wires or go larger incase I decide to go to a Dyna ignition upgrade?


Sorry for being a pain! Fatslob (Bob P.)
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virgilmobile
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Re: Electrical Gremlins

Postby virgilmobile » Sat Aug 06, 2011 9:26 pm

Clean bike...Stay with the same OD wires as they screw into the coil casting and plug adapter opening.It doesn't matter where the gauges are,they all run off the 7 volt regulator.I believe the fuses are under the left false tank cover and are easily accessible.

fatslob
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Re: Electrical Gremlins

Postby fatslob » Sun Aug 07, 2011 9:58 am

Thanks for all your help. Being a male and not always doing things correctly, I went back and looked at the left side shelter where all the electrics are, and realized that I had replaced the wrong regulator. I replaced the 12v one and not the 7v one. I found the 7v reg. kind of tucked in it's little recess. I didn't know that the bike had two.Duh! So I ordered one of the 7v reg. from WingAdmin on this web site. I'm going to say a prayer and hope this is the fix.



Thanks again for all the info, Fatslob (Bob P.)

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virgilmobile
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Re: Electrical Gremlins

Postby virgilmobile » Mon Aug 08, 2011 10:29 am

With enough information "we" can usually guide someone through the troubleshooting procedures to identify the failed part(s).It takes a while but can avoid arbitrarily replacing parts to see if it fixes a problem.

fatslob
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Re: Electrical Gremlins

Postby fatslob » Mon Aug 08, 2011 3:57 pm

Hi

While checking the fuse box on my bike, I found that the middle 5A fuse (fuel etc.) was blown. Would a bad 7v Reg. cause the fuse to blow? I'm now hoping that when the solid state 7v Reg. I ordered comes and with the addition of a good fuse I'll be all set.




Fatslob, (Bob P.)

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virgilmobile
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Re: Electrical Gremlins

Postby virgilmobile » Tue Aug 09, 2011 3:08 pm

Yes it could blow the fuse.It's also connected to the oil and neutral light,according to the schematic.

fatslob
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Re: Electrical Gremlins

Postby fatslob » Wed Aug 10, 2011 10:22 am

Hi, As I was standing under cloudy skies, all of a sudden a bright light shown through the clouds right at me and a Heavenly voice said : Did you check all the fuses dummy?????. And of course being a male I said no!. Well as you might have guessed I found another blown fuse! So as I replaced that 5A fuse and turn the key a host of angels started to sing " Alleluia " as all my lights worked. ( just kidding about the angels, And the voice was my wife with a flashlight ). So ends at least for now the saga of the lights.


Thanks for everyone's patience. Fatslob (Bob P.)

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virgilmobile
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84 GL 1200 I

Re: Electrical Gremlins

Postby virgilmobile » Wed Aug 10, 2011 11:58 am

:D Been there done that.My "Angel" said...If you turn on the gas it might run.Humph.

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Dads75
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Re: Electrical Gremlins

Postby Dads75 » Fri Jun 01, 2012 9:15 am

I am also having problems with my '75 GL 1000 and the fuel and temp gauge. Neither works, the neutral light stays on and the left turn indicator doesn't work (but the right does). This is the bike I grew up on, but my dad had it sitting in his garage for the last 20 years. After he passed away, I inherited the basket case that used to be my joy! I have had the engine and transmission rebuilt, but I still need to work out the electrical bugs (I would send it out as I have ZERO electrical knowledge, but the engine and trans evaporated all my money).

My question is this, could the problem with the gauges be simply the relay? How do I test it and where is it located?

I'm grateful for any help I can get,
dave
1975 Honda GL1000

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WingAdmin
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Re: Electrical Gremlins

Postby WingAdmin » Fri Jun 01, 2012 9:24 am

Dads75 wrote:I am also having problems with my '75 GL 1000 and the fuel and temp gauge. Neither works, the neutral light stays on and the left turn indicator doesn't work (but the right does). This is the bike I grew up on, but my dad had it sitting in his garage for the last 20 years. After he passed away, I inherited the basket case that used to be my joy! I have had the engine and transmission rebuilt, but I still need to work out the electrical bugs (I would send it out as I have ZERO electrical knowledge, but the engine and trans evaporated all my money).

My question is this, could the problem with the gauges be simply the relay? How do I test it and where is it located?

I'm grateful for any help I can get,
dave


Well the fuel and temp gauges can be fixed easily - see: Goldwing 7 Volt Regulators

The neutral light staying on can be a couple things - it can be a shorted neutral switch wire (short needs to be repaired), it can also be a neutral switch that is clogged with carbon, and shorted internally (needs to be cleaned).

As for the turn signals - does the left come on and not flash, or not flash at all?

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Fred Camper
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Re: Electrical Gremlins

Postby Fred Camper » Fri Jun 01, 2012 9:04 pm

The neutral switch can also be a diode that no longer blocks back current. Since you have four diodes on an early GL like yours, you can move another diode into its place and see if the neutral light goes out. Bet you seven volt regulator is bad, that seems like a very common failure on these bikes.

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Dads75
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Re: Electrical Gremlins

Postby Dads75 » Sat Jun 02, 2012 9:55 am

The left turn indicator does nt come on at all. The light on the gauge cluster will come on but not flash.
1975 Honda GL1000

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Fred Camper
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Re: Electrical Gremlins

Postby Fred Camper » Sat Jun 02, 2012 12:56 pm

What happens if you key on the bike but do not start it but have it on a battery charger. That should ensure you are getting 13 volts to the system. Do you still have the same symptoms? Blinkers like to have 13 volts to work correctly and an idling GL1000 will not always provide that.

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Dads75
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Re: Electrical Gremlins

Postby Dads75 » Thu Jun 07, 2012 8:03 am

Ok, I replaced the 7volt regulator and the gauges still don't work. Is there another component that could effect both, or is it more likely they are both fried?
1975 Honda GL1000

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WingAdmin
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Re: Electrical Gremlins

Postby WingAdmin » Thu Jun 07, 2012 8:44 am

Dads75 wrote:Ok, I replaced the 7volt regulator and the gauges still don't work. Is there another component that could effect both, or is it more likely they are both fried?


Make sure that there is +12V going into the input wire on the 7 volt regulator, and that the regulator is grounded. The output of the regulator should then (obviously) show 7 volts.

Disconnect the fuel float sender at the tank and connect it to ground. That should simulate the tank being full, and the fuel gauge should go to full deflection. If that doesn't happen, measure the voltage between the fuel float sender wire and ground - you should see 7 (or close to 7) volts there. If not, it's possible that the gauges themselves were damaged by a faulty 7 volt regulator that let through 12 volts (the OEM Honda ones can fail that way), and the previous owner just left it that way until the coils in the gauges burned out.




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