After reading some of your suggestions I headed to the garage this morning
to tackle the insanity. After pulling flasher relays and emergency flasher
switches, I finally pulled the bulb out of the front left turn signal socket
and guess what, the left rear taillight now has only the red light on when
headlights on, no more dual lights (amber and red light).

I started to focus on the front left signal wiring and after a couple of
tries got all signals working and no dual lights at rear.

Now it's time to try the emergency flashers.....guess what, no left side
flashers only right side. Back to more wire checking of both front turn
signal lights.....to make a long story short final solution was incorrect
wiring on the left front turn signal and 1 incorrect wire on front right
turn signal.

How did this ever work? And how did this get so screwed up.....anyway now
it's time for a nice cold beverage.

Thanks to all of you for your advice. But I still can't understand that
Bentley Wiring diagram......it's really starting to bug me.

Cheers,

John