I really don't like asking a non-Mercedes question here, but, this time, the problem I am having is not with my '84 300 SD, but, it could happen to any car, so I'll say that I am seeking general advice. Please let me know if you have any suggestions, since I haven't yet found a similar forum such as this for my Villager.

My other car is a 96 Mercury Villager van (so I guess you could say its still a 'Merc' ). It won't start, but has full power to the lights, etc. I took the battery out and had it tested - its fine. This is true despite the fact that my wife was able to have the car jump started when this first happened. I pulled out the starter motor and had it tested - its fine, too. I also pulled out the ignition coils and they tested OK. I checked the 'starter/inhibitor' relay and it tested fine as well.

The engine won't turn at all (although on my latest attempts I do hear a clicking noise).

Based on these symptoms and the fact that it did jump start, I am guessing that it is either the ignition switch or else a wire or cable between the battery and the starter that has developed some added resistance due to corrosion. The dealer doesn't even carry this ignition switch for sale without replacing the full mechanical key cylinder assembly and they suggested I bring the car in to them, although I have been somewhat determined to find this out for myself.

Anyway, if you have any general suggestions, I welcome them. Who knows, something similar may happen to my 'other' Merc(edes).

Thanks.