Hey guys, fitting up a brake controller to my GQ, the Tekonsha Primus IQ. The manual recommends using 20A cabling, closest I could find at Jaycar was 25a.

I'm really struggling to fit the cabling into the small openings on the Narva 7 Pin Flat Plug. Surely I can't be the only one who has had this issue? Is there another 7 pin Flat plug I can buy with bigger openings?
Has everyone else just used a lower rated wire? What's the go?