Hi, I am trying to turn a thermoelectric peltier cooler I recently bought into a weak thermoelectric generator. (I bought this one https://www.amazon.com/gp/product/B002UQQ3Q2/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1 ) . I built a basic series circuit with 2 3V batteries and a 1 Ω resistor and this so I could determine which side was the cool side and which side was the hot side and labeled them accordingly. Now, I don't want to ruin the the piece but would like to convert it into a weak electrical generator by. To do this, I understand I have to create a temperature differential across the device, my question is, am I supposed to heat the hot side and cool the cold side, or am I supposed to heat cool side and cool what is the hot side in order to produce an electric current. If I had to guess, I would heat the hot side and cool the cold side. Any advice is appreciated! Thanks!