sump side blanking plug thread

One for the technical / mechanical people.

I'm considering installing an oil temp gauge and the kit details a sump plug sender. I know on my car (1990) there is a plug on the side thats not used for anything. Anybody know what size & type of thread this is?

Cheers,
Paul

Dunno but sure I have few sumps in the shi..classic car part pile ...will measure and get back to you .

Any joy Lee ?

I've got the same plug but don't know the size sorry.

On another note, did all GTA's have the actual sump plug (not the blanking plug) on the forward-facing side of the sump?

Would make more sense to me to have it accessible from the rear. Must be a reason it's that way though. Legacy of the PRV engine normally facing the other way perhaps? Or maybe provides better cooling having the lowest point of the sump facing into the breeze?

Originally thought someone had put mine on backwards!

M22x1.5

http://www.ebay.co.uk/itm/LMA-Gauge-Sen ... 460080dd4a

Many thanks Lee