The second switch on the old assembly is for the lane change function. The one closest to the coil is the EOS switch which changes from the high power side of the coil to the low power (hold) side. You need both on this game (or you cant change the lit lane with your flipper button).

The lugs of the coil can be oriented towards the coil stop, or away (preferred). The plunger will pull in just the same, but there is a lot of impact at the coil stop end which can break wires.

Ok first question i have is what make you suspect the coils are bad? They don’t usually fail unless there is another problem somewhere (over heated due to EOS misaligned etc).

To answer your question though, the wires are attached according to the orientation of the diodes. The power wire needs to go to the outside lug with the banded side of the diode. The ground wire to the other outside lug next to the non banded side. The other two wires are the EOS switch wires which attach to the center and the outside (non banded) lugs.

The important part here is a replacement coil may not have the diode oriented the same as the original. So you can’t always just copy it.

if the coil isnt melted, you probably have a blown fuse or transistor somewhere