The wire is 16ga. 14-16 size 1/4wd. Get them at any quality business, i wouldn’t recommend cheap on these, if you can find the fire retardant 800 degree protection gettum
These coil connectors obviously arnt a problem for most, i remove them quite a bit and the oem its hard to remember to pinch that tab before pulling off and i kinda just have forgot and pulled right off 37 times and the tab gets filed down by not pushing tab hidden in black insulated cover. so the new connectors are just slide on and tight. Not wiggly. Hope it helps someone someday