Optimate adapter connections

[skybluebird]

I've bought an adapter plug to connect my Optimate III via the accessory power point, but the terminals aren't labelled. Could someone please let me know which is +ve and -ve (I'm guessing the centre pin is the +ve?).

Thanks

David

 

[Roge]

You guessed right centre +ve

 

[skybluebird]

Cheers, Roger!

David