1977 GL1000 Coil Swap with 1982 GL1100


Information and questions on GL1000 Goldwings (1975-1979)
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robbykassin
Posts: 4
Joined: Thu Nov 17, 2016 3:08 pm
Location: Warren, MI
Motorcycle: 1977 GL1000

1977 GL1000 Coil Swap with 1982 GL1100

Post by robbykassin »



Hello,

I have a 1977 GL1000 with a bad coil. I have a friend who blew the motor on his 1982 GL1100, and he gave me the coils in hopes that they will work.

I have read that the newer models have electronic ignitions, while the 77 came stock with points, but my bike does have the electronic ignition.

I have both coils out on a bench, but the wiring is very different.

Can someone walk me through how to wire the GL1100 coils onto the GL1000? I am not worried about the mounting, just how the wiring is to be handled.

This is only a temporary fix until I can afford new coils, so it does not need to be permanent, as I know performance may be affected.
Thank you for your help!


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virgilmobile
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Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1977 GL1000 Coil Swap with 1982 GL1100

Post by virgilmobile »

I'm looking at schematics.
Your original setup..does it still have the sand block resistor used with the electronic ignition?
The schematic for the 82 shows it has the resistor also...Wiring it to the bike should be wire for wire.


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virgilmobile
Posts: 9088
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1977 GL1000 Coil Swap with 1982 GL1100

Post by virgilmobile »

this may also help..It's the original wiring.


robbykassin
Posts: 4
Joined: Thu Nov 17, 2016 3:08 pm
Location: Warren, MI
Motorcycle: 1977 GL1000

Re: 1977 GL1000 Coil Swap with 1982 GL1100

Post by robbykassin »

They have have the ballast resistor.
The issue is that the 77 has a separate wire for each ballast connection, as well as two separate ground connections, so there are 6 connections.
The 82 has a 3 wire terminal, and I believe the ballast leads are spliced together, but i cannot tell..
even with the ballast she spliced together, that would still be 4 wires from the 77, although the grounds should be connected since they inputs are what are pulsated..

The concern is only connecting what's needed, and splicing/eliminating the others from the original harness until I can buy proper coils.
Last edited by robbykassin on Thu Nov 17, 2016 5:02 pm, edited 1 time in total.
robbykassin
Posts: 4
Joined: Thu Nov 17, 2016 3:08 pm
Location: Warren, MI
Motorcycle: 1977 GL1000

Re: 1977 GL1000 Coil Swap with 1982 GL1100

Post by robbykassin »

Correct me if I am wrong here,

I should be able to connect the lead from the 82 coil for the ballast/resistor to one of the leads for the 77 Ballast resistor leads, and then the Blue and Yellow wires on the 82 Coil to the respective wires on the bike.

It should work, and the remaining wires from the 77 coils ballasts/grounds will be omitted, considering the 82 ties them all together into one wire instead of having 4 separate wires for each ballast and each coils ground.

Is this correct?
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Fred Camper
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Joined: Sun Aug 16, 2009 9:15 pm
Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: 1977 GL1000 Coil Swap with 1982 GL1100

Post by Fred Camper »

Each coil has two wires no mater what. So that only leaves the ballast and if you have strong coils and electronic ignition then the ballast can go away. Not sure the 82 coils are strong enough, not any history using those myself.
robbykassin
Posts: 4
Joined: Thu Nov 17, 2016 3:08 pm
Location: Warren, MI
Motorcycle: 1977 GL1000

Re: 1977 GL1000 Coil Swap with 1982 GL1100

Post by robbykassin »

The issue with the 82 Coils is that the ballasts and the ground side are spliced down to 1 wire, so there is a single, 3-wire terminal that would connect to the harness on the 82 model.

With the 77, each ballast wire and ground wire was independent of each other, meaning that the harness has 6 connections. I do not want to modify the coil is any way, as it is only being borrowed until the bike can be returned home (I go to school 2 1/2 hours away from home).

I want to just attach what wires are necessary to get the bike to run and ride properly.


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