Oil Temperature Gauge(s)...so what do I have here? Options

[GregAmy]

I've got a '74 2L, 4742918315. Thing was a rebuildable basket case when I got it, been hacking away...today's task was the center oil temperature gauge: it doesn't work.

In reviewing the wiring diagram it appears that I should have a green/black wire running from the sensor at the bottom of the engine to a green/black wire in the center console. However, while I have the red/white and brown wires going to the gauge, the third wire is...white. I used a VOM to ring out the white wire, and it does not go to the sensor wire in the engine compartment.

But here's another odd thing: the car also has a fuel combination gauge ("silver button") with a temp sensor in it. In reviewing various pages on the web, I'm thinking that's not what's supposed to be in this car; best I can tell, this car with a center console oil temp gauge should have a blank area at the top of the fuel combo gauge.

- What do I have here? Is this a center console that someone added on? It has an operational clock and voltmeter (which sucks, by the way).

- If this is the case, what is the plug with the white wire supposed to be for? I don't see anything obvious in the wiring diagram, there's no voltage to this wire, nor does it ring to ground at all.

Stumped, but intrigued...

Greg

[Harpo]

Hint hint someone needs to put together a group buy for these with -04 aero quip lines and appropriate fittings.

Any volunteers?

David

[GregAmy]

Hint hint someone needs to put together a group buy for these with -04 aero quip lines and appropriate fittings.

You're talking about the stainless braided line to remote mount the VDO oil pressure sensor? Chris Foley is making up one for me..I can inquire for a final price and ask how many he's willing to make...

As a related aside, on the race cars we avoid mounting these on the engine to avoid vibration failure (I mount mine on the firewall)...has that been an issue on these engines on the street? - GA