My September 1975 1850 cross-over model between Dolomite and 1850HL has (had) exactly the same clip but on the offside bulkhead, and the reason I know is the sidelights went awol with a smell of burning one evening. I actually traced it to aaarrggh, I can't remember exactly, a screw at the rear of the parcel shelf or similar cutting through the wires and shorting out, my fault. I can dig out the original post and photo's from the forum if required. But to repair the damaged wires involved pulling the metal clip from the bulkhead, and that wasn't easy! There's now a Nylon P-clip there!
Hi Bill, Thanks for that info; I detect these metal clips are quite bad news -40 years on ! I think I shall have a poke around on the offside as well next week. The problem is I don't think the sidelight circuit is fused; so this is why one may end up with burned wires.
Yes, Good Plan ! I think nylon P-clips are the way to go.
Cheers for now,