Cole Hersee solenoids master and starter. Bracket mounting holes 5/16″ x 19/32″ with 2-13/64″ on centers. Battery connects to right stud (facing front) Maximum torque requirements: 10-32 threaded studs 15 in/lb., 5/16-24 threaded studs – 35 in/lbs. Do not over torque. Master: 12 volt continuous duty. Starter: 12 volt grounded intermittent duty. 750 amps make 100 amps break with 10 seconds on – 20 minutes off.