this one is plug and play https://www.amazon.com/gp/product/B09BV5J2XT/ref=ppx\_yo\_dt\_b\_asin\_title\_o09\_s01?ie=UTF8&th=1

If you’re looking for twist throttle, I use this. It’s got the 3 pin connector, so it’s plug and play. Works perfectly on my s2. BAFANG Twist Throttle for eBike https://www.amazon.com/dp/B09BV5J2XT/ref=cm_sw_r_cp_api_glt_fabc_9GKMM372H72ZW650NR3X?psc=1