A better way than using the NSS on the column is to use the NSS and BU light off of the 4L60. I found that I could not get effective BU lights and NSS together using the column mounted piece.
For some reason I can't attach pics right now, but you can download the Painless wire harness instructions for PN 10204
See page 99 of the instructions (page 109 of the pdf).
https://www.painlessperformance.com/Manuals/10204.pdf