Question I found a Commodore 128 outside. How do I test to see if it works?

[Eric_H_1]

What cables, type of monitor and other things do I need to use a Commodore 128?

 

[TerryLaze]

If you didn't find the power supply as well you will need to find a PSU with compatible outputs and wire your own connector here is a page with the layout.
http://www.drunknretro.com/2018/02/commodore-128-to-64-power-supply.html
For the output you will need something that has an rgbi connector or you will have to buy/make an adapter for VGA (monitors) or av (old TVs) ,google is your friend just add VGA or av to the search about rgbi connector.