Amazing! Astounding! Wonderful! I was skeptical as to whether or not this would make a difference. As it turns out, my worries were completely unfounded. This was an amazing upgrade for my 2006 Squier Vintage Modified Jazz Bass Fretless.
The installation was very easy, the hardest part was putting the wires into the harness itself, but that was likely more related to my age and terrible eyesight than anything else.
The full-size CTS pots were a superb upgrade and the harness has reduced the noise my Jazzer produces.
I did have to get a USA-sized control plate and knobs, but I knew that going into this.
I will be buying another one for my Squier CV Precision, I like it that much!
If you are "on the fence" here, go ahead and buy the harness. If you have a Squier Jazz bass, save yourself some trouble and buy the entire package.