schematic wire notations

[bricktron]

hi folks,

what standard did MB use on their schematics to indicate wire size? here are some examples of what numbers i see:

battery-starter: 25
GP fuse-GPs: 4
horn switch-ground: 1.5
rear light assemblies-ground: .75

what units are these?

[rog-o]

The W124 manual indicates that it is the cross section in mm.

That would seem to make sense except for the battery-starter: 25

[bricktron]

thanks rog-o. 25 mm2 in cross section is about 3 gauge, so i can believe it!