For the best quality electrical connection I would suggest solder rather than tap in connectors which are usually problematic. See YouTube videos on how to get a good solder connection. You need to heat the twisted wire connections hot enough to melt solder touching the wires, not the soldering iron, into the wires. Insulate with high quality (professional grade) electrical tape that will not unravel or deteriorate with age or shrink wrap if you have it. If you do opt for tap connectors purchase Posi-Lock connectors and do not use the cheap tap connectors most hardware stores sell as these are notoriously unreliable and produce intermittent connections over time. It's common sense but NEVER solder a live connection, disconnect your POS battery lead, it can fry important parts if your soldering iron is grounded. Don't do any of this without purchasing or owning a cheap digital Volt/Ohm meter so you can do things like confirm polarity.
You may still need to purchase plugs for the lights as I am currently retro fitting plugs on the lights so I can easily remove and disconnect them when removing side fairing panels. Up to this point I have had to use extra long wire leads I then stuff up under the fairing.
You can purchase specialized stuff like this (12v waterproof plugs), 12v relays, fused connector blocks, etc. on eBay/AliExpress cheap in the automotive section.
Last edited by twowheels; 06-26-2017 at 10:49 PM.