Examples:
NMO mount using PL-259 coax connector with Larsen NMO-2/70SH dual band ham antenna
Midland GMRS antenna with NMO base:
3/8" stud mount for CB antenna with typical coax connectors:
3/8" Stud Mount with Firestik CB antenna (ring terminals rather than PL-259 connector):
Hi @Mr. Bills
In the first picture, with the Larson antenna, what type of NMO connector did you use? Looks like it was able to fit through the same type of tail light mount that we also use for our CB antennas, and using the same type coax.