mot

[Pete/London]

Thanks for the interest, what does that mean ? which wires do I need to connect together?

I`m no expert on cars, boilers are my forte,but from what you descibed as the problem being the rear offside part of the system then trace out the pair of wires that supply that part of the system. It may be on a wiring diagram for your car giving you the colours of the wires. When your sure you have the right ones and they dont connect to anything else then cut them and tape them together. If it doesn`t help then reconnect with terminal connectors, make sure its water tight.
Its only a suggestion!!! no responsibilty taken
have you tried an on line search?

[Terpe]

.....Its only a suggestion!!! no responsibilty taken
have you tried an on line search?

That's OK I certainly wouldn't hold anyone responsible for something I'd decided to do

In fact I appreciate your feedback. Thanks.
I think it's a pretty darn good suggestion, and one I hadn't considered.

Yes, I've tried an online search. It's a Merc and I'm also a member of an owners forum.
I've done plenty of reading and searching the archives and haven't found a definitive answer for the rear systems.
It's quite a complex system and complex wiring arrangement. Each wheel has it's own independent system.

I'll wait until the warmer weather arrives then I'll do some cutting etc. Thanks for the idea.
I'm also thinking about how to 'eliminate' the dashboard warning light. No light means no MOT failure.

My frustration was due to the random way it came on and went off. On = Fail, Off = Pass
unpredictable, but I was lucky. Yipee