I where some problem with the front lights on my 67 convertible RS ( i find the problem now)
during the investigations , i have notice a parts of wiring that didn't appear in the book.
it's a 10 inches wire that start at the back of the fusebox (in the engine compartment) and connected at the other side to the connector that on the differents books i have seen, normaly connected to the back of the fusebox ..i don't know if i'm clear....
this wire just prolongate the one that run from the lights to the connector at the back of the fuse box.
that's seem to be original because the color of the diffrents wires are correct .
do someone notice that before
( my car have power windows, power top)
the french owner.....