Wiring harness for an 81 KZ440

I recently ripped mine out. The previous owner had no clue what he was doing. The wiring harness looked like a rats nest, everything was poorly wrapped in electrical tape. It was a nightmare. I decided to go with a simple setup for my bikes electrical system. I'm just going to remove the key ignition, wire the starter solenoid to a button and put a circuit interrupter switch hidden on the bike so you have to switch it on to start it. I don't plan on leaving the bike anywhere besides my garage anyway. Then the headlights will be wired to a switch.
I still need to wire up.
-Headlight/ running lights
-Brake light
-Tach/ speedo
-Maybe blinkers
And then the obvious basic stuff, spark plugs, etc.
Is there a generic/ universal wiring harness I could buy to use? or am I stuck working from scratch? I'm not opposed to it, i've worked with automotive wiring before, I'd just like the easiest option if it's available.

Dimecitycycles might have simple wire harnesses. Or you might find a good 440 or universal harness on eebbaayy.
Here's a topic by loudhvx in which he supplies quite a few bare bones wiring diagrams.

KZR topic -- 1980 750H bare bones for mattylight by loudhvx