I am in the process of fixing up a 81 alumacraft and am having issues with the 3 prong plug on the tilt motor. Ive read that the horizontal slot on the motor itself will have 12 volts, but Im getting 12 volts on one of the vertical slots. I have the 4 pair wire (blue, green,purple and brown) coming from the remote to the back of the boat.I was told that purple should be hooked to 12 volt source, but was thinking I should get that from the 3 prong plug. If anyone could shed light on this subject I sure would appreciate the help.