Hi!
Our transformer needed replaced in our Coleman Evcon electric furnace and the old transformer wiring is a little different than the new transformer. We need to know which wires are the load and line side and which ones go together in the male ends. On one side there are black, white, orange and red. On the other side, there is blue and yellow. Any guidance you can give me on this would be much appreciated.

:confused:

The transformer should be labeled either on the part itself or on the box it came in,sounds like a multi funcional transformer if to the black, white, orange and red should be your line side,, 2 of whatever color are for 120V and the other 2 are for 220 v

I've got the same thing my wires on the transformer are 240 org, 208 red, 120 blk, com what on the primary side so which two do I use if I'm replacing a 240v transformer?

Orange and white