I have an older janitrol heat pump 240 volt. I know my transformer is bad.
However it's an older one with one 1 black wire built in. The rest of the
wires connect to it with spade clips. The one black wire plugs into power
supply. Another red wire comes from power source and plugs into
transformer. On the other side I got a ground wire plugged in, another
wire plugged into a relay of some sort, and 2 more wires plugged into the
t-stat wires. New t-stats have 4 wires coming off one side. I'm assuming I
use those 2 for power coming in. Cap off other 2. On other side I have 2
wires coming off at 24 volts but I need 3. Any idea or help would be great.

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