That looks way to short to me.I would extend the wires to make sure that there is no pressure pulling on them.Make sure you wrap your wires well where they exit the handlebars to keep them from rubbing.I would also us heat shrinking connectors.Good luck!
You definitely need to extend the wires. Probably want to go with a 4 to 6 inch extension. You can buy kits online, though I would \\; recommend doing the splices without a kit. I just finished setting up my WO 518s, and when I used an extension kit it put the extenstin bundle right at the opening, which made running all the wires through that hole a real bear.
i had to extend my cables with the 508's. 4-6 might be what's called for, but i was wishing i had more when it came time to start plugging the wires into the connectors.
airdog