Adding this drop in harness was pretty easy. The only real hiccup was the holes in my Epiphone LP didn’t match up. Not the fault of Obsidian Wire, my guitar was the problem. Once I got the holes to a point where I could install one of them didn’t cover up completely.
Now as for installing switches and pickups? Couldn’t have been easier. Took me all of 10 minutes. I prefer the 50s wiring, but how great is it that if I choose to use modern wiring I flip two switches. I love the taper of the pots. This is a great and easy upgrade and recommend it over rewiring it. I had rewired to 50s wiring diagram but the MKII sounds much better than my wiring, and I have rewired many guitars successfully.
The only problem I have is the knobs sit high even though I have the unit as low as I can get it., but I can live with that.
Get one, you wont be disappointed!