The red an black goes to the lower spin motor. The green and white wires are for the inside motor that apperato be givig you a problem. You can test the motors by touching both small red and black to each battery trminal. ALso do this for green and white. Not sure how you can test voltages for the timer???You might want to test battery though.

1. If smaller motor spins when you touch green and white wires then it might be battery. The timer is made to scale back power to small motor to 40% power. If the battery is a little weak it will spin lower motor but not top. So it appears it is mtor but is battery.

2.If motor does not spin at all when touching battery (that is 12 volts) then it is small motor problem and this is under warranty.

3. If it does spin with battery and its fully charged it is a bad timer, under warranty also.

Call 800-847-8269 and they will send you the right parts. Tell them the process you went thru. Sorry you are having trouble but good thing Aquapro feeders have 4 yr warranty.

Greg Grimes
www.lakework.com