rb20sil

Has anyone ever experienced a coilpack heating to breaking point. This is the first time i've started the engine in the car and the 1st coilpack connector (ie. closest to radiator) superheats the coilpacks until they blow and doesn't spark. All the other coils fire perfect but do the same thing on the first connector. I've also noticed the first coil had different wiring to the rest. I have absolutely no idea what it could be i thought maybe an earth somewhere but can't figure it out. Thanks.