Ye olde wiring harness? When to replace?

Haha... ok... Painless is no good? Is there a preferred aftermarket brand?

I'm not going to say they are no good. Their quality is fine.

The issue I had is that if you don't use all of their parts it isn't so painless.

I'd go with ROn Francis who makes didicated harnesses for our cars. Never heard anything bad about him.