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post #1 of 14 (permalink) Old 03-02-2017, 10:09 AM Thread Starter
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08 GL1800 Heated Seat Conversion Questions

I have a 'base' 2008 1800 and recently I had the chance to buy a factory heated seat in perfect condition for a good price. The seller installed an aftermarket seat and just wanted the stock one out of his way. My intent was to find a good used seat to install a backrest in, not really for the heater, but now that I have it, I would like to hook it up. Before I attempt to wire it in I will test the seat to see if it will heat, but assuming that goes well, has anyone here ever done this swap? Anyone know where to find the wire connectors so I don't have to cut into the harness on the seat?

Any help would be great!


Bill
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post #2 of 14 (permalink) Old 03-02-2017, 07:04 PM
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I put 1 on my 08, wired in relays and used turn signal flashers to control the heat. Double throw switches, 1 way direct and the other way through the flashers , 2 separate switches and circuits for front and rear. I didn't bother trying to find matching connectors.

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post #3 of 14 (permalink) Old 03-02-2017, 11:00 PM Thread Starter
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Thanks Dave for the reply with a great idea. I was wondering how the low setting worked, and if it were part of the switch. The seat is in storage, and I never really looked at the wiring for it. Maybe I will just remove the wires from the connectors and hook to them without cutting. I hate cutting factory wires.


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post #4 of 14 (permalink) Old 03-03-2017, 05:47 AM
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Quote:
Originally Posted by 77Pinto View Post
Thanks Dave for the reply with a great idea. I was wondering how the low setting worked, and if it were part of the switch. The seat is in storage, and I never really looked at the wiring for it. Maybe I will just remove the wires from the connectors and hook to them without cutting. I hate cutting factory wires.


Bill
The OE system pulses the power at varying frequency to control the heat but having just a high and low works fine, even better than the OE system IMO. I hate cutting wires too but sometimes you just don't have a choice.

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post #5 of 14 (permalink) Old 03-03-2017, 12:00 PM
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a 12 volt LED dimmer switch uses PWM to control the heat to any setting you desire.
With Pulse Width, the power is on and off in short burst, so not a constant strain on the charging system.

Then you can run a separate power wire from battery to the PWM control, then to seat.
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post #6 of 14 (permalink) Old 03-04-2017, 10:58 AM Thread Starter
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a 12 volt LED dimmer switch uses PWM to control the heat to any setting you desire.
With Pulse Width, the power is on and off in short burst, so not a constant strain on the charging system.

Then you can run a separate power wire from battery to the PWM control, then to seat.
Thank you for the reply.

Do you mean one like this:

https://www.amazon.com/XtraLED-Dimmi...+dimmer+switch

I plan to run it on a relay so it will not pull too much power from the accessory lead, but still shut off when the bike is.


Dave, can't find a really good wire diagram for the seat itself, with its 10 wire connector! I did find the ones I attached below. I think I just need the pos and neg for each of the pads, can you tell me what wires those are?


Thanks again,
Bill
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File Type: jpg Heater1.jpg (54.6 KB, 6 views)
File Type: jpg Heater2.jpg (66.2 KB, 6 views)
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post #7 of 14 (permalink) Old 03-04-2017, 05:00 PM
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The white & yellow, red & yellow are to the seat heaters, the passenger backrest heater is the red/white & yellow/red.

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post #8 of 14 (permalink) Old 03-05-2017, 10:06 AM Thread Starter
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Dave, thank you.

Seat tested out fine, front and rear. I have a relay and relay harness, I just need to get two single pole double throw switches and two H/D turn signal flashers. As far as those PWM switches, as great as I think it would be, I don't know where to mount them because they are fairly large. Also, if one failed I loose heat, and if a flasher goes out I still have the high setting.



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post #9 of 14 (permalink) Old 03-05-2017, 04:35 PM
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You can buy the PWM without a plastic case, and you can dismantle the case to remote mount the control knob if desired

To each their own method and happiness
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post #10 of 14 (permalink) Old 04-20-2017, 11:02 PM Thread Starter
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Dave,

Honda seems to put the turn signal relay in the circuit before the lights and beeper, but does it need to be wired that way? I can't imagine it making a difference, but figured I would ask before I installed everything.

ADDED: Wired up and with the flasher units installed it doesn't seem to be turning on and off. Seems to be steady power. Did you use two or three wire flashers?


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