So unfortunately somebody who previously owned my car cut the harness for all of the taillights and side markers. Right past the loom. I have no problem soldering it, that won't be a big deal, but by the time I've stripped the wires and soldered I'm worried about length so I'm thinking I'll have to splice in a couple extra inches to each wire, so does anyone know the gauges of these wires? It looks like two different sizes to me (I wish I'd taken a picture). Thanks!

 

18 is plenty large enough for all, based on the current they have to carry.