LHD W.G (West Germany) wires from dimmer & dash switch to headlight relays?

[Rascal21]

A friend of mine made me a schematics so I could use a simple 87-87a/87a-87b switchover relay and 30-85-86-87 relay to get the headlights working again, so that 86 pin on both relays are connected to dash switch and dimmer switch respectively, now I`m getting one of the beams working, presumably low-beam, but high beam does not work and dimmer only makes the headlights flicker..

I checked the low-high beam relay (Dimmer relay) and as it turns out, both pin 87 and 87a is giving power at the same time despite dimmer being in neutral position..

I`ve changed the dimmer/column switch assembly too and I was assured that it would work by the seller.

Thought it was oscillation so my friend had me add a diode and capacitors across the 30-85-86-87 relay pins towards earth etc, but still no go!

We are at wits end, what is it with this cars headlight system that makes things so hard for me and anyone unfortunate enough who dares help me? This issue is putting professional car electricians and experienced amateurs TO SHAME
If we had had an evil boss, most of us would have been dropped through the floor to the piranhas/sharks already!