[hognutz]

all the MILD to WILD is, is just a relay. it sources 12v and turns is on an off. you can test the mild to wild box with a simple test light. to see if it is functioning correclty. on will be 12V supplied, off there will be no voltage. that is all it does.

Now I can not comment if the circuit that controls the exhaust flaps iselft has any codes it can throw I have never looked into it. I would get the code number and google it.