When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I guess I don't understand the opposition of running the ground back to the battery or ground lug in front of the battery. If you're pulling the tank to run the positive wire there anyway, what's 1 more wire? It's just as easy to route 2 as it is to route 1 of them. Again, the path of the least resistance.
Biketronics instructs people to run the ground to the radio mount bolt.
This could lead to ignition whine if any section of the path to the chassis is not at zero ohms.
As other users have stated, you've gotta run a wire to the positive side of the battery, it ain't any more real trouble to run another wire to the negative side. You've gotta remember these amps draw a tremendous amount of current. Any weak links in either the positive wire or the ground wire could cause trouble.
Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.