Hello everybody,
this is my first post, so be gentle with me, hehehe.

I have recently had the head rebuilt on my ST170, the problem is, for love nor money can I find where this plug goes???

I don't know how to attach a pic so I will describe it.

It's a very short thin 2 wire grey plug in the same loom as the temperature sender in the top of the thermostat housing.
Infact it looks similar to the thermostat housing temp sender.
The big label stickered to the loom reads

2M5V-9H589
AD

Any ideas would be greatly appreciated,
thankyou

 

This any use?

 

Hiya Mate,
thanks for a quick reply and the pic.
YES! I have now found it thanks to you.

The part of the loom is not clear in the pic, if you follow up from the temp sender you can just about see another loom dissapearing behind the head. (hence why I couldn't find it).
This goes to the Knock sensor, it was a bit of a tight job to click to two plugs together, infact I removed the fuel rail to gain enough access.

Having said all this, without you pic I would of still been scratching my head!!!

Thanks again mate