I live in sweden and need to fix my rear turn-signals.
In sweden the turnsignal must be orange (can not be the breaklight i.e.)

So now I connected the turnsignal to the backup light (right before they connect to the bulb I just cut the wires and connected the turnsignal to the backuplight) and replaced the backuplights with orange bulbs.
BUT I can't seem to get a "clean" signal from either turn-signal nor brakelight.
The new turn signal also lights when i hit the brakes (but just sometimes?) and the brakelights doesn't work (again only sometimes)

So I thought I would connect them in the engine bay instead, directly after the switch.
But now when i look at the wiring diagrams again doesn't seem to be any "cleaner" signal than the one I already have.

So where is the signal? :)

I would REALLY appreciate any help since i can't drive the car until this problem is fixed.

Wiring diagram:
http://www.autozone.com/images/cds/gif/large/0900823d8008796e.gif
http://www.autozone.com/images/cds/gif/large/0900823d80087956.gif

I live also in Europe. I wired the front blinkers to the back. That is the only clean signal