I have a mate at work who owns a 200tdi defender. He has offered to lend me a hand and help pull the wings and parts off and have a look and try to replace the shuttle valve first. Will be a few weeks away until we can attempt it.
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Hey Scotty, I've had the same issue for a while. The lights come on or stay off without ant type of pattern. Hope it works out well for you and im keeping a keen eye on the results. Good luck!