Guys, you may find a wiring harness from Supercheap Auto useful. I got the Aerpro Part# APP0141 (Says it's for '87-'96 Corolla). It plugs directly into the cars wiring harness. All you need to do is match up the colour of each wire colour from the radio's harness to the same colour on the adapter, and then just plug it in. No chance for incorrect wiring, and no need to cut the cars wiring !! As for the 'Butterflys' they fill the gaps at each side of a double-din unit. The Toyota Part Numbers are: 86221-52050 LH Side 86221-52060 RH Side