Recently purchased coils from4in1.com and both coils have 1 blk wire and 1 yellow wire. The store told me that the wires can be attached to either terminal since the there is no polarity. Here's my question: the old coils have 1 blk wire (on the 1&4 cant be seen in pic) and 1 white wire on rhe 2&3. 1 orange wire connects both coils. how to wire the new coils???