Ok then it has to be kicker , it's for when you turn on the A/C it speeds up the engine (or keeps it from dying) a tad , you have to use a volt meter to test it to find out , when the A/C clutch is engaged you should have voltage on one of the wires , been years since I have seen one , the newer ones used vacuum to do the same thing , hope this helps , Later Blane in Mississippi 😇