Here are some pictures of my current dolly....

Hi everyone in this forum,

My name is Phong, and I have been a handyman working for hotels for 20 years. It's becoming a bit too heavy for me to carry the PTAC units to wash them every year. I'm looking for ideas on how to convert my 3-wheel dolly into a 12V motorized dolly. I would appreciate any suggestions on where to buy the parts or any general help to get me started with this task. The capacity should be around 100 to 200 pounds, but my current 3-wheel dolly has a total capacity of about 600 pounds. Sorry if my english is not too good.

Thank you for your help!...