This diagram is for a special preamp that is not sold retail. You may find this in some older instruments or in New MTD Basses.
This diagram applies to the TCT, NTCT, and XTCT as well as the pre-wired harnesses.
This diagram applies to the NTMB+F and NTMB+FL as well as all of the pre-wired harnesses. It includes information about mid switch configuration as well.