I finally managed to solve my dipped beam problem.
It actually was technically rather easy to do, but it wasn't so simple to understand the circuit diagram. It took me hours to figure it out. This is how I did it:
1. I cut the wire which supplys 12 V switching current of the dipped beam relais about as far away as possible of the relais (5-6 cm would be enough). Isolate the wire on the side now pending freely, it is of no use anymore (do not isolate the side of the connector).
2. I cut the wire which comes out of pin 10 of connector E. Connector E is locate above the fuse array, it's the one to the right, directly above fuse F4. Pin 10 is the second-left pin of the lower line of pins of connector E, the wire supplies current for the illumination of Fiat Bravo back sign plate.
3. I build a Y-cable using some old wire I had, connecting one end of my wire to the not isolated wire of the relais connector (12 V supply voltage) and the other end to the wire which had been cut of connector E pin 10 and also rebuild the connection between the two ends of the wire of pin E. I used standard wire clamps for isolation.
So the dipped-beam relais now gets 12 V from the pin of connector E taken from the voltage for the lamp in the back sign plate, and the back sign lamp still gets its voltage, too. Every time the back plate gets current, the relais will get triggerd and the dipped beam will glow, too.
4. I now switched on lights using the switch of the stalk unit. Parking lights and dipped beam lights brighly glow as they should, independent if I put them to position one "parking light" or position two "dipped beam / main beam light". If in full beam mode, there is now some additional light by the dipped beam lights which will no longer be automatically switched off - but as one only puts on full beam when there is no car in sight this additional light won't disturb anybody. It's actually a nice feature for those fast and furious night racers among us;-)
Zardo