Is Quartet Harness Fused?

[wjbertrand]

Is it safe to assume that the quartet harness is fused through the main factory fuse bank somewhere and that I can add accessories, heated grips for example, without adding a new fuse?

[georgeorge]

I would think that you can assume that any power supplied by the quartet harness is fused. I don't think honda would have wanted that liability on their hand if they supplied unfused power. The only question would be what size fuse your power is going through. You might want to power on your accessory that is powered through the quartet harness and pull each fuse 1 by 1 to see which one cuts power to your accessory. Then you'll know. If you pulled em all and none of them cut the power, then you'll know that too.

Brian

[NewsMag]

They are all fused, and details are here (http://motorcycleinfo.calsci.com/ST1300_a.html).

[wjbertrand]

Thanks guys, I was wondering because I saw a photo of the Honda 12V power outlet that looked like it had a fuse spliced in-line. I don't plan to draw more than Honda seems to have designed it for (heated grips, power outlet, etc.) for now, but I'll re-evaluate if I decide to add anything high-draw. I don't think a radar detector or a GPS draws much so am not concerned about adding those later.

[crazykz]

The heated grips and the 12V socket I believe are both fused. At least I saw something on the heated grip wiring that looked like a fuse holder but I couldn't get it open but I didn't try real hard. Probably because I was crying about the dealership pinching the wiring harness, ruining it. Sorry just whining. :(

Curt

[crazykz]

I know now that the heated grips uses a 5A glass tube type fuse and the 12V accessory plug uses a 2A ATC type fuse.

Since there is a 12V switched and 12V constant in a couple places on the quartet harness doesn't that mean that each one of those has to be fused seperately on the bike?

I know that there's a 15A fuse for the whole thing I guess but wouldn't it make sense that the switched 12 and constant 12 both have their own fused circuits at the fuse block?

Curt

[Kennedy]

I know now that the heated grips uses a 5A glass tube type fuse and the 12V accessory plug uses a 2A ATC type fuse.

Since there is a 12V switched and 12V constant in a couple places on the quartet harness doesn't that mean that each one of those has to be fused seperately on the bike?

I know that there's a 15A fuse for the whole thing I guess but wouldn't it make sense that the switched 12 and constant 12 both have their own fused circuits at the fuse block?

Curt

This is not my work.
One Red/Green wire is an available spare circuit fused at 15 amps, listed in your primary fuse box (switched power) as ACC or Hazard/ACC, on when the ignition key is on ON or ACC. The sixth wire is also Red/Green, on always, fused at 10 amps, listed in your secondary fuse box (direct to battery power) as Battery / Clock Backup. This wire is always hot. So, you can tell them apart by turning your bike off and seeing which one is still hot.

[AgSTreak]

I blew out the fuse to the quartet harness when I installed my electric windshield kit. It's the next to last fuse in the back fuse box on the left side. :o: :03biker:

[crazykz]

Hey thanks everyone. Looks like I should spend some time looking at my fuse box.

Kennedy, I put a voltmeter on the wires in the 9-pin connector and I thought those two 12V wires were the same colors but when I got a light on it I notcied they are different but close. There's Red w/Green that is constant 12V and the other is actually Red w/Black and it's switched 12V. (or maybe I've got those backwards now. I'll have to check again.) I'll know for sure when I get the Hitachi connectors to start wiring power.

I have a free 3 pin plug with a black connector available for something also and it looks like that may have 12V and switched 12V also but I would have to check that.

Funny thing is that I was getting slightly less than 12V last night. Maybe the battery is getting low because I'm not running the bike and trying to test all this crap.

Now does anyone know what pin has a ground wire on it in those harnesses?

Thanks,
Curt

[dannyk]

Curt, don't know if I understand your question on the ground or not but in the quartet harness every plug in has a ground wire, solid dark green, this would also be the ground wire throughout the bike.

[Kennedy]

I am guessing that the black connector is for the Honda radio.???? Curt would be great if you can post any up dates on this.

[crazykz]

Hey Kennedy,

Ok here's the scoop on this one and I hope it's right. If anyone wants to contest it please state what you think is incorrect and please state what test you did to come to that conclusion. I'm not saying I'm right but I did spend an hour in the garage going over this with a multimeter.

One thing I'm not sure in this is if the light blue and orange wires for the turn signals put out 12V when they are on. A mutlimeter isn't a very good tool for measuring a timed output signal. That line does twitch though when the signal is on so I do believe it is the wire for it. I probably just need to stick a 12V bulb on it and see what happens.

This might be good to put in the docs section or something if it is correct.

QUARTET WIRING HARNESS - PINOUT

NOTE: Color/Color = Solid Color/Stripe Color
ACC 12V = 12V supplied when ignition in ACC
Switched 12V = 12V supplied when ignition in RUN

9-Pin Clear Connector
Green - Ground
Light Blue - Right Turn Signal
Red/Black - Switched 12V
Orange - Left Turn Signal
Red/Green - Constant 12V

3-Pin Black Connector
Green - Ground
Light Green/Black - Switched 12V + ACC 12V
Red/Green - Constant 12V

3-Pin Red Connector
Green - Ground
Light Green/Black - Switched 12V + ACC 12V

3-Pin Clear Connector
Green - Ground
Red/Black - Switched 12V


Now there is a 9-Pin connector that connects the harness to the bike. When the wiring goes through that connector some of the wire colors change. Mainly it's the 12V wiring. It doesn't make sense to me but it ends up that there are two wires with the same color scheme but they do two different things. Anyway I'll try and write this out here.

NOTE: Color <-> Color = Harness Side <-> Bike Side

9-Pin Clear Connector at bike for quartet harness
Red/Green <-> Red/Green - Constant 12V
Light Green/Black <-> Red/Green - Switched 12V + ACC 12V
Orange <-> Orange - Left Turn Signal
Light Blue <-> Light Blue - Right Turn Signal
Red/Black <-> White/Green - Switched 12V
Green <-> Green - Ground

I hope this helps some people.

Curt

[Rodm850g]

Guys,
I think to be on the safe side I am going to add a secondary fuse box and install it in tail section for driving lights, external power source, gloves{gerbings} just to be on the safe side....number 8 to hot and ground to frame .the store has a four,or a six circuit fuse box...more than enough room for a few farkles, I got on order the GoldWing power socket, its about $30 where the ST is about $60 some dollars.....Its going in left pocket near the quartet wire....not cheap, frugal...... :yes: look at electricalconnection.com

[Kennedy]

Thanks for all your work Curt.
I have it saved and will be using it shortly

[Kennedy]

Hey Charlie may I may a suggestion that Curts work be moved to the knowledge base section. His work seems to be the most accurate and detailed information available. I am sure more then I have been in need of this information.
Thanks.