Where to get +12v ignition somewhere under the seat? - Honda Goldwing Forums
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post #1 of 8 (permalink) Old 10-07-2017, 06:06 PM Thread Starter
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Where to get +12v ignition somewhere under the seat?

Hi folks,
I am planning to install a seat heater kit on my GL1800 like I did on my previous bike. It worked really well and would like to equip my G1800 with it before winter. I will use a relay to ensure that the seat heater can only be powered when the ignition is on. Before I do my own research and start testing wires with a voltmeter do you have any suggestion/idea where to get the ignition +12v somewhere under the seat?
Thanks

Alain

2002 GL 1800
BMW 1999 K1200LT - totaled
various other bikes before


Vieux motard que jamais

Last edited by alpac; 10-07-2017 at 07:25 PM.
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post #2 of 8 (permalink) Old 10-07-2017, 07:39 PM
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Hi folks,
I am planning to install a seat heater kit on my GL1800 like I did on my previous bike. It worked really well and would like to equip my G1800 with it before winter. I will use a relay to ensure that the seat heater can only be powered when the ignition is on. Before I do my own research and start testing wires with a voltmeter do you have any suggestion/idea where to get the ignition +12v somewhere under the seat?
Thanks
If you are just looking for a trigger signal for a relay, then you could tap into the tail light wire at the 14 pin gray connector(C15). It’s the brown/white wire and only goes hot with the key on. Another option is to attach your trigger wire to the ACC terminal on the fuse box.

Candy Red 2004

Last edited by Techdude2000; 10-07-2017 at 07:41 PM.
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post #3 of 8 (permalink) Old 10-07-2017, 08:18 PM Thread Starter
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Originally Posted by Techdude2000 View Post
If you are just looking for a trigger signal for a relay, then you could tap into the tail light wire at the 14 pin gray connector(C15). Itís the brown/white wire and only goes hot with the key on. Another option is to attach your trigger wire to the ACC terminal on the fuse box.
Thanks

Alain

2002 GL 1800
BMW 1999 K1200LT - totaled
various other bikes before


Vieux motard que jamais
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post #4 of 8 (permalink) Old 10-09-2017, 02:02 PM
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For a heated seat, which will draw some amps, I would definitely go right to the fuse box Accessory terminals.
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Richie
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post #5 of 8 (permalink) Old 10-09-2017, 06:32 PM Thread Starter
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For a heated seat, which will draw some amps, I would definitely go right to the fuse box Accessory terminals.
Thanks but I was not asking about where to power the seat heater from but where to get the +12v ignition to trigger the relay and Techdude2000 gave me the answer. For powering the seat heater element I will go straight to the battery since the seat heater kit comes with its own fuse.
Thanks again folks.

Alain

2002 GL 1800
BMW 1999 K1200LT - totaled
various other bikes before


Vieux motard que jamais
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post #6 of 8 (permalink) Old 12-28-2017, 02:44 PM Thread Starter
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Yesterday I finally installed a seat heater kit similar to this one https://www.ebay.com/itm/Universal-M...FUnDgh&vxp=mtr
Today I tested it in 29℉ and it worked really good. Here are pics of the two switches front and rear and a pic of the front heating element being installed under the front seat cover.
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Alain

2002 GL 1800
BMW 1999 K1200LT - totaled
various other bikes before


Vieux motard que jamais
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post #7 of 8 (permalink) Old 12-29-2017, 08:39 AM
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Looks like a job well done Alain!

grab all the kicks you can baby, you only make this scene once!
current rides: '09 GL1800AD "SENSHI"; 2003 RVT1000r (RC51) track bike... certified m/c addict. IDMWT #12. GWRRA #028890
Daryl
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post #8 of 8 (permalink) Old 12-29-2017, 02:44 PM Thread Starter
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Looks like a job well done Alain!
Thanks. I tried to make it not look too much like an aftermarket add-on. Bottom line cost is around $70 and about 3h of work.
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Alain

2002 GL 1800
BMW 1999 K1200LT - totaled
various other bikes before


Vieux motard que jamais
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