1959 beetle gauge of wire?

 Note that the chart that refers to 1956-1961 is for a Bus, not a Beetle. Beetle is further down the page.

 Also, note that there are numbers associated with the wires.. numbers like 0.5, 1.0, 6.0, and such.. all the way up to 25 for the wire coming off the battery.

 These are wire sizes.. in mm.

 Convert to AWG here..

http://www.type2.com/library/electrip/wire.htm

 As for color?.. what they are showing might be correct, I'd have to look to see what they say for my 67, and what's actually there. You could do the same for any wiring under the hood, dash etc. See if the colors agree with what the chart says.

 Hope this helps,

 Jim