Is it compatible?

None of the 72's and a 74 112's that I have the pto brake. JD has clip that pop rivets to that arm to make sure the pto doesn't spin a tear out the wires M46937

Some guys have dug very carefully and found the torn off wires and soldered onto them and made the pto magnet work. I installed the clip M46937 to make sure the arm never comes off and lets the pto spin and tear the wires off. Guys said in the past the pto were around $1200 for 72-74 Jd's. A pto and the brackets for 200 series would work on a 110-112.