Glanza mate, original engine loom on 4efe is one plug and the 4efe dash loom is one plug.
Original Glanza engine loom is 2 plug and one plug dash loom. So now you should have 2 plugs from your engine loom (Glanza) and one plug that doesn't fit in the ecu from the dash loom (4EFE).
I bought a new right size plug and pins from a guy on eBay (advert now gone) and chopped the old plug off and put the right plug on.