I had a productive day today. I received some replacement power window motors. Someone here recommend this place on Ebay, Chrysler motor for $25 and free shipping. WINDOW LIFT MOTOR (NEW) fits: CHRYSLER FIFTH AVE IMPERIAL LEBARON NEW YORKER | eBay I basically followed the 1966 SM which said to remove the regulator assembly and motor together, with the window in a down position, which was good because my window was in the down position. The manual however only said there were 4 bolts to remove, this is not true. Thanks to @mr. fix it ,which I messaged back and forth today and earlier this week, gave some idea what to expect. You will have to loosen the front vertical track for the window and remove back horizontal guide track for the 3rd arm of the regulator assembly. The PO also cut a hole as pictured which definitely made this process easier. Then you must set the assembly in a vise when removing the motor because of the load of the spring. With the motor removed you will need to take the reduction gear, bottom bracket, and splice in the old harness connector to the new motor. I cleaned and greased all the contact points and tracks. I was lucky all my rollers were in excellent shape, so time to reassemble . I marked everything when I removed it, to get the track back into the same position, no adjustment on the 1/4 window was needed and still matched up perfect with the front window. I will replace the other side now too. Both sides would not go up with out my assistance. This is the first time since I have owned Goldie, that the window went up on is own.