OK, that looks fine. It's just that they'd bent the centre lug over so far to the left to solder it to the casing that it looked a bit wrong in the picture. I normally snip the unused lug off on the tone pot to avoid any chance of getting it wrong or something shorting out on it.
Finally got the wiring harness installed. It works fine and there is a definite difference in tone. I don't know what words to use to accurately describe the difference but it's very noticeable. I'm glad I made the change.
I'd say at this point my SG is nearly as good as it's going to get. In addition to the new harness it has upgraded locking tuners, a String Butler, a roller bridge, a vibrato and strap locks. I recently took a 1 day course to learn how to properly set up a guitar. Once all my tools arrive that'll be the last thing to do.