Confused about this wiring


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GL470
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Joined: Tue Jun 18, 2019 9:06 pm
Location: Surrey, BC, Canada
Motorcycle: 2008 GL1800

Confused about this wiring

Post by GL470 » Sun Jul 07, 2019 10:51 pm



I am new here. I just picked up a new-to-me 2008 GL1800 from the local Harley Davidson dealer. It has Nav, Comfort, ABS, and Airbag. I got a very good deal.I guess someone traded this Goldwing in for a Harley and the HD dealer doesn’t want to keep it in the show room.
The bike runs well except for the owner added accessories don’t work; the power plug in the left front pocket has no power, the trunk power plug has no power, the trunk light doesn’t come on, etc. I try to trace the wires, but it's a maze. The wires disappear under the shelter and I am not sure which is which when they come out. Some wires change colours several times.
There is an add-on fuse plate that most of these wires seem to connect to. But I cannot understand how it works. This fuse plate is wired to the negative side of the battery, should it not be wired to the positive side? Here is a picture.
I am charging the battery now since I over played with the electronic.I would really appreciate someone can shed some light on this.
Kenny





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MikeB
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Re: Confused about this wiring

Post by MikeB » Mon Jul 08, 2019 12:06 am

You are correct, the auxiliary fuse panel is supposed to be connected to the positive side of the battery.
MikeB
Tacoma, WA, USA

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Andy Cote
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Re: Confused about this wiring

Post by Andy Cote » Mon Jul 08, 2019 7:04 am

Suggest you disconnect the aux panel completely until you figure out what's going on. High level of concern but investigation required before just switching over to the positive terminal.

Can't say not knowing but the AUX plugs in the left glove box and the trunk lid are USUALLY connected to the stock wiring harness. Pull the inner trunk lid and the glove box and take a look. If so and these are not live, go ahead and check the OEM fuses first. Once that is straightened out, use a continuity tester from the fuse panel to the various added accessories to see what fuse services what and that the fuse is properly connected to the positive side of that accessory. You can use the continuity tester to check each accessory ground side against the negative battery terminal.
DARKSIDE #1500
2018 Goldwing, basic black

Previously: GL1200 standard, GL1200 Interstate, GL1500 Goldwing, GL1500 Valkyrie Standard, 2000 Valkyrie Interstate, many other Hondas

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GL470
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Re: Confused about this wiring

Post by GL470 » Mon Jul 08, 2019 9:17 am

Thank you for the quick responses. This confirms my suspicion. I will proceed with caution and test all the connections on the add-on fuze panel before making a final switch to positive. Thanks again.
Kenny

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AZgl1800
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Re: Confused about this wiring

Post by AZgl1800 » Mon Jul 08, 2019 5:30 pm

agree with the above suggestions.

disconnect that extra fuse block, and then make sure that all the OEM wiring is good.

the left fairing pocket hides a small power connector that can be used for a GPS, etc.
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GoldWingrGreg
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Re: Confused about this wiring

Post by GoldWingrGreg » Tue Jul 09, 2019 3:05 am

Regarding the power port in the LF pocket. Depending on the brand, some will have an inline 3amp fuse under the pocket.

As for the other wiring and the aux fuse box, I correct lots of aftermarket wiring on 5th gens. To me, an add'l fuse box in the battery area makes for a cluttered installation. It is best to give-up a rear pocket and place it there or under the seat. If it were my bike, I would remove and re-due all the aftermarket wiring in the photo. Also, the fuse box is full of high amp fuses, which tells me one of 2 things. Either the person who wired it over-fused its various circuits, or the circuits really need 20/30 amp fuses. If the later is the case, most aux. fuse boxes have a max amp rating, and he's running way too many amps through that fuse box ... like 130amps. Most aux fuse boxes max out at either 30 or 50 amps.

GL470
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Re: Confused about this wiring

Post by GL470 » Tue Jul 09, 2019 9:37 am

GoldWngGreg, you are right, I think the 20 and 30 amp fuses are overkill in this application. I am tempted to start all over again and rewire all the add-ons and label them properly. That will be a winter project.
I am finding out more add-ons as I spend more time with the bike, eg wire tor an Ipod or Iphone 4 via CD button, head light and brake light modulators, some sort of security system, bunch extra wires to an XM or CB. Anyways, summer is here and its time to ride, deal with those unknowns in due time. Thank you for all your inputs.
Kenny

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Asphaltmaniac
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Re: Confused about this wiring

Post by Asphaltmaniac » Wed Jul 17, 2019 10:08 am

Fuse plate wired to the - side? Obviously done by the crack Harley mechanical staff.... :lol:

GL470
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Re: Confused about this wiring

Post by GL470 » Wed Jul 17, 2019 12:40 pm

I wondered about that. Anyways, I removed the fuse plate completely and will deal with it when the riding season is over.



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