I am trying to wire a light switch to a singal phase control box with a delay to the motor.how do I wire.I've tried light switch from l2 to a1 with jumper to 15 on delay and the coil from delay to the outside sw on control box

We need to know exactly what time delay relay you have, make and model number. We need to see the wiring diagram for this TDR.

Be sure the contacts handle the load, use another relay for higher current if needed.