Ducati Monster Forum

Moto Board => Tech => Topic started by: ChrisK on July 31, 2013, 01:17:51 PM

Title: Short Ground Wire
Post by: ChrisK on July 31, 2013, 01:17:51 PM
There's a short, 3" ground wire that runs from a point on the back of the motor to the back of one of the rearset bolts.... What is that wire for?
Title: Re: Short Ground Wire
Post by: Speeddog on July 31, 2013, 03:05:26 PM
It's to complete the ground path back to the battery.

Your bike originally had a ground wire from battery negative terminal to the tray/airbox bolt directly under the left side of the battery.

Title: Re: Short Ground Wire
Post by: krista on August 01, 2013, 01:41:10 AM
Specifically, that wire removes the assumption that the frame being attached to the engine itself formed an electrical connection. This grounding strap helps formalize and ensure the connection from the engine's metal itself to the metal of the frame.
Title: Re: Short Ground Wire
Post by: ducpainter on August 01, 2013, 03:55:53 AM
Quote from: chris on August 01, 2013, 01:41:10 AM
Specifically, that wire removes the assumption that the frame being attached to the engine itself formed an electrical connection. This grounding strap helps formalize and ensure the connection from the engine's metal itself to the metal of the frame.
...and it should be mentioned that bikes with Kokusan ignition rely on a good ground to protect the ignitor boxes.
Title: Re: Short Ground Wire
Post by: ChrisK on August 01, 2013, 06:20:50 AM
Quote from: Speeddog on July 31, 2013, 03:05:26 PM
It's to complete the ground path back to the battery.

Your bike originally had a ground wire from battery negative terminal to the tray/airbox bolt directly under the left side of the battery.



My bike still has that ground wire.

Thanks for the help guys.
Title: Re: Short Ground Wire
Post by: krista on August 01, 2013, 02:38:06 PM
Quote from: ducpainter on August 01, 2013, 03:55:53 AM
...and it should be mentioned that bikes with Kokusan ignition rely on a good ground to protect the ignitor boxes.

OH!! kokusans now have an alternate source. Electrosport started selling them, so we keep those on the shelf...
Title: Re: Short Ground Wire
Post by: ducpainter on August 01, 2013, 02:51:24 PM
Quote from: chris on August 01, 2013, 02:38:06 PM
OH!! kokusans now have an alternate source. Electrosport started selling them, so we keep those on the shelf...
That's not a bad price either. [thumbsup]

They were stupid expensive for a while.