Changing HT Leads

[oharab]

ok, I've had a PM extracting the urine & I didn't pick up on whit's biting sarcasm!
I'm not a mechanic, I do computers better than I do cars, honest. Though if I'd thought about it, the i on 525i should have warned me.
:P to you all!
The wire at the bottom of the big metal thing that gets hot and under the bit where the plastic pipe goes into the big metal thing.

There, I've exposed my limit of enginical knowledge! Now can anyone help?
B

[winfred]

theres a wire clip that you need to press on the plug to get the plug out of the socket