[Diploman]

A much simpler, easier and very secure way to make custom wiring harnesses is to use Posi-Tap connectors. They require no crimping, no bespoke matching connectors, do not damage the OEM wiring into which you are tapping, and are extremely easy to use. I have used them for decades with excellent, foolproof results. Highly recommended.

Posi-Tap- No Crimp Tap

 

[Diploman]

Compactness, secure connection, ease of use and minimal damage to OEM wiring. If you take off a Posi-Tap, the insulation at the tapping point will only have a tiny puncture, easily sealed with a drop of silicone sealer or a wrap of electrical tape.

I'm curious why tapped wires would offend your aesthetic sensibility, since they are invisible unless the bike is disassembled.