1970 porsche 914 ignition switch wiring, How does original ignition switch differ from new aftermarket switch. Options

[radobard]

I just replaced my ignition switch on my 1970 porsche 914 4. The replacement switches have four wires connected , red, red/white, black, and grey. My original switch had five wires, red, red/black, black, grey, and a copper see through wire. First question, does the red/ white wire on the original replace the red/black wire on the new? Second question, what is the function of the copper see through wire? If I don't have it in the replacement switch, will something not work? Here is a photo of an original switch with the five wires. The see through copper looking wire is at the top.