TOPIC:

I have an 83 LTD 550 that has alot of electical problems so I purchased a wiring harness to try and remedy problem. Does anyone know where I can get a wiring diagram? I consider myself a decent mechanic but I have never done a complete rewiring, any pointers?

www.nwsca.com/gpz550/KZ550%20Base%20Manual.pdf

For some reason John's link didn't work for me. Let's see if mine works.

home.comcast.net/~loudgpz/KZ5mnl.pdf

Well it didn't. Let's try it another way using the URL tags.
home.comcast.net/~loudgpz/KZ5mnl.pdf

And this one is a color diagram for an 81, found here on KZrider. It's the first pdf.
diagram

I put a new wiring harness into my CB550 last year. It was a lot easier than I expected. I almost didn't need the wiring diagram. Just take it slow and do a section at a time; rear end, then under the seat, then under the tank, etc. Remove a wire from the old harness, connect it to the correct place on the new harness, then go to the next wire. By following this procedure I had almost no problems when complete. My electrical problems were solved and the old girl fired right up. Good luck.