Engine Bay electrical connections

[CvB55]

Hi, Looking for some help as I near the end (hopefully) of my chassis off restoration .... although I took lots of photos these electrical connections in the engine bay are alluding me. Any help as to where they go would be very much appreciated

[phillpot]

Black one is an earth.

Red looks non original, can't help with that one. Is there no opposite half anywhere?

White looks like A/C compressor, not used unless your car has air con.

[CvB55]

Thank you for the quick response -
Black ring terminal one being an earth makes complete sense, I'll find a bolt/stud on the engine
Red one - it's located on the front nearside of the engine but nothing obvious to plug it in to
Translucent multi pin one - there are two, if it's for air con ..... maybe that's why I can't find anything to plug them in to!

[Belle427]

Lambda sensor connectors look similar to that translucent one too.
Red one isnt standard, is it srltill running standard ignition abd management?

[sixor8]

Might it be the connection to an alarm siren? It may have been aftermarket and redundant if you don't have one.

[CvB55]

Thanks for the further suggestions ............ translucent connector (there's two of them, one near the bulkhead, the other further forwrad on the engine), yes it's standard ignition, no lambda sensors, and with regards to the the red connector I don't believe it's anything to do with the alarm, as it's not near the wings/bulkhead.
Thankyou again!

[Belle427]

The connectors for the lambdas will still be there even if they are not used, same as the A/C one as the same loom was used.
Cant help with the red one sorry, loom looks like it has been worked on to me.