Moin all together. Been with my Megane 1 Cabrio Bj 1997 1.6e 90 hp. The gearbox made noises. Coupling was changed before about 600km from the previous owner (in the workshop). When the clutch stepped away was grinding. Well I thought, out back bearing. Gear down. Back bearing used, clutch new. New bearing and fresh oil in, as the oil was black. Noises were gone. But came new problem, which is perhaps my fault. When I was disassembled I have everything mark the pen was not waterproof. All the markings were gone. If I put in the first gear now, we put in the reverse gear although I don’t pull up the “ring” (I don’t remember the name). Did I push in too far the pole? My second question on the edge? Wanted to install a Renault Megane CD radio. This has 2 small plugs blue and yellow. In the car is a narrower elongated installed. ? Pinbelegun/Color. Thank you very much in advance.