Aftermarket Lights and Relay question


Information and questions on GL1500 Goldwings (1988-2000)
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popellis
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Joined: Tue Oct 20, 2009 7:09 pm
Location: Erie,PA
Motorcycle: 1985 GL1200I Interstate

Aftermarket Lights and Relay question

Postby popellis » Thu Mar 06, 2014 11:55 am



Hi All

I have a new to me 1997 GL1500 Aspencade with the ring of fire lights on the front, add on driving lights, add on trunk light bar, and saddle bag light bar, along with the rear trunk spoiler. All connected to a switch box on the handle bar with switches running, front, rear and driving lights separately (3 switches). The 3 switches operate 3 relays to operate the items listed, with a 30 amp fuse providing power. My question is this. I purchased the "power plate" distribution block so I could break these down to individual fuses. Would I be better off still using the relays or eliminate them? I found the current setup that the 30 amp fuse holder was starting to melt.
From what the Previous indicated that the lighting system has been on there for awhile. I'm just going over things before the season starts.

Thanks
Mark



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robb
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Re: Aftermarket Lights and Relay question

Postby robb » Thu Mar 06, 2014 2:00 pm

Did you get the relay kit with the power plate, if so then it is the only relay needed to control all fused outlets on plate.

popellis
Posts: 5
Joined: Tue Oct 20, 2009 7:09 pm
Location: Erie,PA
Motorcycle: 1985 GL1200I Interstate

Re: Aftermarket Lights and Relay question

Postby popellis » Thu Mar 06, 2014 5:17 pm

Robb

I was talking about the original 3 relays installed by the previous owner.

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robb
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Re: Aftermarket Lights and Relay question

Postby robb » Thu Mar 06, 2014 5:44 pm

If a relay kit came with your power plate it will drop out power when bike is off. The 3 existing relays are no longer needed.

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WingAdmin
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Re: Aftermarket Lights and Relay question

Postby WingAdmin » Fri Mar 07, 2014 10:39 am

robb wrote:If a relay kit came with your power plate it will drop out power when bike is off. The 3 existing relays are no longer needed.


I think the 3 existing relays he mentioned were triggered individually by the switches, in order to avoid running the full current of the lights through the switches, which may not be rated for that current. The fact that the 30 amp fuse he found was melted, indicates to me that there is considerable current draw by the lights. If that is the case, then I would suggest leaving those 3 relays in place.

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robb
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Re: Aftermarket Lights and Relay question

Postby robb » Fri Mar 07, 2014 11:14 am

He can wire from power plate to switch, then directly to device. The power plate relay will control all circuits leaving the plate. All other relays would be an unnecessary load. Sounds like his lights are drawing from an inadequate power source and need rewiring.

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WingAdmin
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Re: Aftermarket Lights and Relay question

Postby WingAdmin » Fri Mar 07, 2014 11:54 am

robb wrote:He can wire from power plate to switch, then directly to device. The power plate relay will control all circuits leaving the plate. All other relays would be an unnecessary load. Sounds like his lights are drawing from an inadequate power source and need rewiring.


That's not what I'm saying. The switches themselves may be insufficiently rated for the load. If the lights are drawing say, 10 amps, and the switch is rated for only 5 amps, you must have the switch operate a relay (which itself must be rated for at least 10 amps, and preferably more), and that relay then operates the lights. Wiring lights that draw 10 amps directly through a switch rated for 5 amps will cause the switches to quickly fail. The fact that the relays were there in the first place is fair evidence that this is the case.

popellis
Posts: 5
Joined: Tue Oct 20, 2009 7:09 pm
Location: Erie,PA
Motorcycle: 1985 GL1200I Interstate

Re: Aftermarket Lights and Relay question

Postby popellis » Sat Mar 08, 2014 9:10 am

Thanks Guys

To clear some things up the switch panel was made by "Addon accessories". I was looking to replace it because the housing is cracked and the lights in some of the switches do not work anymore.
I found out "Addon" went out of buisness so I ordered a different switch box.
The current switches took power from the dogbone fuse on the left side of the bike, through a 10 amp inline fuse. This operated the relays.
From the right hand side of the bike he tapped into the dogbone fuse next to the battery and ran the power line to the 3 relays through a 30 amp fuse.
The driving lights i figured at 55 watt each, so the draw for both lights I figured at 9.16 amps (55watts x 2 = 110 watts / 12volts = 9.1666666)
The rear lights I am guessing at 3 watts each and 30 lights and the spoiler lights =roughly 100 watts / 12 = 8.33333 amps
The ring of fire Light I don't image draw more 1.5 amps so the total draw would be around 25 amps I guess. So maybe there was a short or the fuse got water in it. I'm not sure.
Like most motorcycle accessories they usually don't tell you the ratings for the equipment.

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robb
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Re: Aftermarket Lights and Relay question

Postby robb » Sat Mar 08, 2014 12:19 pm

A 30 amp circuit is good for a 24 amp continuous load, 10 amp fuse good for 8 amp load, 15 amp fuse good for 12 amp load and 20 amp fuse good for a 16 amp load.

popellis wrote:The driving lights i figured at 55 watt each, so the draw for both lights I figured at 9.16 amps (55watts x 2 = 110 watts / 12volts = 9.1666666)


Overloaded for 10 amp circuit, needs to be wired and fused at 15 amp .

popellis wrote:The rear lights I am guessing at 3 watts each and 30 lights and the spoiler lights =roughly 100 watts / 12 = 8.33333 amps


Overloaded for 10 amp fuse, know it's border line but still unsafe and would need to be wired and fused at 15 amp.

And WingAdmin is correct, about relay rating, it is rated for the load through the contacts. The driving and rear light relays would also be failing and need to be 15 amp relays to avert overheating.




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