Where to draw power

Discuss everything about Honda GoldWing. Feel free to ask any question related to GoldWing.

Moderators: CYBORG, Oldewing, robin1731, Forum Moderators

Post Reply
leggman
Titanium Member
Titanium Member
Posts: 346
Joined: Thu Sep 08, 2016 5:31 pm
Location: Trapp Kentucky

Where to draw power

#1

Post by leggman »

I am still working on my 77 barn find and I need a location to draw 12 volt power for the GL1100 electric fuel pump I am running. When I put one on my 79 I had the accessory terminal to use but the 77 has no such terminal. Of course I want this to be running when the key is on but I will likely include a small toggle switch in the left side shelter half to turn it off for things like setting the timing etc. when I don't want it to run.
Thanks. Dave
User avatar
CYBORG
Moderator
Moderator
Posts: 24538
Joined: Mon Jan 14, 2008 12:52 pm
Location: Muskegon mich

Re: Where to draw power

#2

Post by CYBORG »

I would run it off of the battery direct, controlled by a relay. Many will also suggest a tip over switch in case of a tip over
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
User avatar
Rat
Photo Gallery Admin
Photo Gallery Admin
Posts: 15457
Joined: Fri Oct 21, 2005 9:59 pm
My Album: https://www.ngwclub.com/gallery/v/wingmans/rat/
RIP: cookie
Location: Toronto .... Canada

Re: Where to draw power

#3

Post by Rat »

Where did you find a GL1100 with an electric fuel pump ?

Gord :roll:
"I'd rather Ride than Shine"
‘14 KLR650 ... not a rat ... yet
‘84 GL1200i ‘R2B6' (Rat to Be 6, the last, adopted by twowings)
My Original 'RAT' was a hybrid '82 CB900/1100F
leggman
Titanium Member
Titanium Member
Posts: 346
Joined: Thu Sep 08, 2016 5:31 pm
Location: Trapp Kentucky

Re: Where to draw power

#4

Post by leggman »

I might be wrong, the pumps might have been for a 1200. I have a relay for the pump but I need a keyed 12 volt source for the coil in the relay
Last edited by leggman on Tue Oct 09, 2018 5:33 pm, edited 1 time in total.
leggman
Titanium Member
Titanium Member
Posts: 346
Joined: Thu Sep 08, 2016 5:31 pm
Location: Trapp Kentucky

Re: Where to draw power

#5

Post by leggman »

I found a black and white wire I thought went to the coils but for some reason it only shows 6 volts??It is the coil hot wire but only showing 6 volts something has got to be wrong. ?
Back to the drawing board
User avatar
CYBORG
Moderator
Moderator
Posts: 24538
Joined: Mon Jan 14, 2008 12:52 pm
Location: Muskegon mich

Re: Where to draw power

#6

Post by CYBORG »

Coils often start on 12v, but actually run on 6v, to prolong the life of the coils. A lot of other sources for 12v when the key is on
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
Shadowjack
Silver Member
Silver Member
Posts: 654
Joined: Fri May 26, 2017 11:07 am

Re: Where to draw power

#7

Post by Shadowjack »

The ballast resistor is causing that. It's bypassed when you hit the start button, because battery voltage drops when the starter is turning, usually to about 9 volts is the battery is charged properly. Ballasts are in there to keep the points from burning up when the voltage comes back up after the starter stops. Nothing to do with the coils.
Find the black wire from the killswitch that FEEDS the ballast and tie your relay coil to that.
User avatar
CYBORG
Moderator
Moderator
Posts: 24538
Joined: Mon Jan 14, 2008 12:52 pm
Location: Muskegon mich

Re: Where to draw power

#8

Post by CYBORG »

Shadowjack wrote:The ballast resistor is causing that. It's bypassed when you hit the start button, because battery voltage drops when the starter is turning, usually to about 9 volts is the battery is charged properly. Ballasts are in there to keep the points from burning up when the voltage comes back up after the starter stops. Nothing to do with the coils.
Find the black wire from the killswitch that FEEDS the ballast and tie your relay coil to that.

I don't agree with your logic as to the reason for the ballast resistor, but I could be wrong. Would not be the first time. But I thought the capacitors had more to do with controlling the voltage at the points. Actually I don't think much about it anymore, as all of my bikes have electronic ignition. Still say the best place to draw power is from the battery via a relay
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
User avatar
tlbranth
Platinum Member
Platinum Member
Posts: 1636
Joined: Mon Jan 28, 2008 12:16 am
Location: carnation, wa

Re: Where to draw power

#9

Post by tlbranth »

I think it's a bit ugly to hook things up directly to the battery. A cleaner way would be to run a wire from the hot side of the starter solenoid to a new fuse box, fuse that supply close to the solenoid. Run all your new stuff from the fuse box.
As for the coil/resistor thing, the standard coils are low resistance and cannot be run for any length of time on 12 volts. But for starting purposes they do indeed run on whatever the battery will deliver. Once the start button is released, the coils are fed through the ballast resistor which drops the voltage for running. The condensors are like buffers for the points. Surges which would cause sparking (and wear) on the points shunt to the condensor. This protects the points.
I don't think I made up most of this. But maybe.
Terry
Don't own a Vanagon
Don't work at Boeing
Life is good

1999 GL1500 SE
2002 Honda VT750 "ACE"
1975 GL1000
1970 CB750
User avatar
CYBORG
Moderator
Moderator
Posts: 24538
Joined: Mon Jan 14, 2008 12:52 pm
Location: Muskegon mich

Re: Where to draw power

#10

Post by CYBORG »

tlbranth wrote:I think it's a bit ugly to hook things up directly to the battery. A cleaner way would be to run a wire from the hot side of the starter solenoid to a new fuse box, fuse that supply close to the solenoid. Run all your new stuff from the fuse box.
As for the coil/resistor thing, the standard coils are low resistance and cannot be run for any length of time on 12 volts. But for starting purposes they do indeed run on whatever the battery will deliver. Once the start button is released, the coils are fed through the ballast resistor which drops the voltage for running. The condensors are like buffers for the points. Surges which would cause sparking (and wear) on the points shunt to the condensor. This protects the points.
I don't think I made up most of this. But maybe.
That's the way I remember it as well. And when I said direct to the battery I meant not thru the harness. Your idea is great
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
leggman
Titanium Member
Titanium Member
Posts: 346
Joined: Thu Sep 08, 2016 5:31 pm
Location: Trapp Kentucky

Re: Where to draw power

#11

Post by leggman »

I will look at it tomorrow, I might just tap into the 12 volt wire that runs from the ignition switch to the starter button on the handlebars. I would like to eliminate the glass fuse panel and replace with a more modern fuse panel but its very crowded in the left shelter half. It is hard to find a aftermarket fuse panel that is small enough to fit.
User avatar
tlbranth
Platinum Member
Platinum Member
Posts: 1636
Joined: Mon Jan 28, 2008 12:16 am
Location: carnation, wa

Re: Where to draw power

#12

Post by tlbranth »

Search for 'Automotive fuse block' on the web. There's a million of them. Opt for one with a 12v bus going to each fuse and Bob's your uncle.
Terry
Don't own a Vanagon
Don't work at Boeing
Life is good

1999 GL1500 SE
2002 Honda VT750 "ACE"
1975 GL1000
1970 CB750
Shadowjack
Silver Member
Silver Member
Posts: 654
Joined: Fri May 26, 2017 11:07 am

Re: Where to draw power

#13

Post by Shadowjack »

Not my logic about whether the ballast protects the points or the coils. Every pre-electronic ignition 12-volt system (not 6V) has one, whether a separate resistor or a special resistance wire. This is the same. The theory is in plenty of old service manuals, or you can just Google it. If you want to see it in action, just bypass it and see what happens to your points...
User avatar
JamesPal
Chrome Member
Chrome Member
Posts: 178
Joined: Sun Sep 05, 2010 10:57 pm
Location: Bellevue, Waashington USA

Re: Where to draw power

#14

Post by JamesPal »

Any of the black wires are +12 switched to the ignition switch. Green is ground.
"If everything is under control you are not going fast enough" - Mairo Andretti

'85 GL1200I
'81 GL1100 STD
'72 CB450
leggman
Titanium Member
Titanium Member
Posts: 346
Joined: Thu Sep 08, 2016 5:31 pm
Location: Trapp Kentucky

Re: Where to draw power

#15

Post by leggman »

Does anyone know what the auxilliary power unit is or does
Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “GoldWing Tech Discussions”