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.

[3d914]

The image below shows the switch (26) on the schematic.

Red wire (#30 at connection #12) goes to the fuse box (Fuse 11), the main light switch, and battery positive. This should be a thick wire.

White wire (#34) appears to go to the adjacent signal switch in the column.

Red/White wire (#35 at connection 13) also goes to the light switch.

Black wire (#15 at connection 8) goes to fuse box (Fuse 8) and to the rear relay board in the large connector at pin 8.

Yellow wire (#36 at connection 10) also goes to the rear relay board in the large connector at pin 1.

Doesn't look like you can do without any of these. Haynes has a good manual for the 914 with all the schematics. May prove helpful.

[pdlightning]

The image below shows the switch (26) on the schematic.

Red wire (#30 at connection #12) goes to the fuse box (Fuse 11), the main light switch, and battery positive. This should be a thick wire.

White wire (#34) appears to go to the adjacent signal switch in the column.

Red/White wire (#35 at connection 13) also goes to the light switch.

Black wire (#15 at connection 8) goes to fuse box (Fuse 8) and to the rear relay board in the large connector at pin 8.

Yellow wire (#36 at connection 10) also goes to the rear relay board in the large connector at pin 1.

Doesn't look like you can do without any of these. Haynes has a good manual for the 914 with all the schematics. May prove helpful.

Does that mean the replacement switch doesn't have enough wires? All of the replacement switches I have seen for the 70-71 4 cyls have only four wires. The 6 cyls have a reg 911 multi pin replacement switch.