Dumb Coil wiring question

Don't make fun, but while trying to troubleshoot a no fire problem with my 67 barracuda, my buddy thinks I have my wires that run to my coil terminals are backwards. He thinks I have the wrong one connected to the neg. side of the coil and the one that should be on the neg. side to the positive. He decided this while looking at the wire diagram for my orange box, that may have went kapoot. Is this possible. My car has been running and driving fine for a couple of months since the last time I messed with my coil and could of possibly flip-flopped them. Would it start at all if these were backwards? Thanks!