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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through July 30, 2006 » Power point wireing for firebolt « Previous Next »

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Bake
Posted on Saturday, July 29, 2006 - 09:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I mounted a power point in the fairing so I can charge some things enroute, it looks easy to get 12+ from the right hand fuse box but anyone know a good place to get the negative side in this area?
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Diablobrian
Posted on Saturday, July 29, 2006 - 05:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The chassis is the negative side. Anywhere you can get a good connection to the frame works.
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Slaughter
Posted on Saturday, July 29, 2006 - 06:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The fairing or flyscreen mounting bolts would work for the negative side like Brian said, the WHOLE BIKE is the negative terminal. Just touch metal with the negative lead.
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Bake
Posted on Sunday, July 30, 2006 - 12:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks guys I found one but that whole front end (fairing and mounting bracket) is isolated from ground.
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Jackbequick
Posted on Sunday, July 30, 2006 - 10:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Bake,

Not sure about the XB's but on the tubers every black wire around lights and accessories (and maybe every one on the bike?) was a ground. So if you can find a black wire up in that area, you can follow it to a ground point.

That may go through one or more wiring harness connectors but it will be a ground. If the size of black wire you found seemed to be consistent with the intended load at your power point, I'd consider using one of the 3M splice tap connectors to connect to an nearby black for a ground.

If I was going to be running more than 4-5 Amps at the power point I'd would probably run a new ground wire with a ring terminal to one of the existing hardware (nut and bolt) grounding points. I'd do that using a good grade of Teflon jacketed wire and cable tie it to the wiring harness run (avoiding chafe and pinch points of course).

I just added an power point for the tank bag on my Dyna. I used a 30 Amp relay (from American Sport Bike) with the relay switching the load on with the key the accessory position.

The 12V + lead to the relay is taken from the + post on the battery with a ring terminal and fused (20A) between the battery and the relay. The lead to the tank bag is sheathed, marine grade 14/2 with a shielded bullet connector on the + side so that I can tuck it away under the seat when not in use. The ground on the tank bag lead goes back to the same nut/bolt as the negative terminal on the battery.

Right now I'm using the tank bag connector for a GPS receiver, a iPAQ PDA, and an XM receiver. Those three have a maximum draw of 7 or 8 Amps and are either have their own fuses (2 to 5 Amps) or are relying on the 20 Amp fuse in front of the relay to prevent overloads.

And the whole thing goes cold when the ignition is turned off so I don't have to worry about leaving something on and killing the battery.

Jack
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Diablobrian
Posted on Tuesday, August 01, 2006 - 12:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The fairing support is supposed to be grounded to the chassis. It should not be insulated.
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