I bought a used STMM this year to put on my second planter. It came with the correct wiring harness that i needed and was only used for one year on very few acres. However it will not register more than 12 rows. I have 2 24 row planters if I switch the Dickey John cable from the module the my original STMM will see all 24 rows however the used one I bought will still only see 12. Any advice would be great.
Ag Leader STMM - Seed Tube Monitoring Module
