Mine is off to the doctor tomorrow morning to find where the oil drip is coming from - gearbox or crankshaft? Fixing it will probably be more expensive than leaving it and having the oily drive re-laid in five year's time. Labour will be four hours at £72/h, oil seal 7/6d.
At least I don't have a cam belt, AdBlu, DPF, air bag sensor faulty, engine warning light or any of that pallava to pay for. . . . .but I do have a clonk from the front nearside suspension when negotiating a typical English road, so that will need looking at before the next MOT.
TBH, 4 owners in 4 years should have got the alarm bells in your head ringing immediately! and 5 owners (with you) in 4 or 5 years when you try and get shot will not be any better
And as you know, you can get any connectors, plugs and sockets from sellers on-line nowadays. Maybe not in B&Q, but via Amazon or eBay ... no problem. Sargent themselves sell all of these if you want to buy from there, but they don't make the connectors, they buy in the "Loc 'n' Mate" connectors themselves.
All I can hope for is that someone like me turns up to buy it and doesn't worry or ask about how many owners. If you ask a dealer why the last owner got rid of it they will just say something like "It's a 4 berth and their kids didn't want to go with them any more'. A load of old codswallop of course so you may as well not ask. I don't think I did ask, this wagon is pretty rare and I was glad to find it at a reasonable price. I will now happily accept £20,000 less than I paid for it 13 months ago. I could have had a round the world cruise with my wife for what it has cost me. It is, however, being a Mercedes Sprinter with proper torque converter automatic a lovely thing to drive.
As for the connectors I did look at the usual makes of multipin connectors thinking they are Molex, but they aren't. Also they aren't the standard computer power connectors. The maker of the connectors don't even label them. Even if I did find the same make I would not attempt, nor be able to stuff two 1.5mm conductors into one pin, and I have many years of electronics experience. If I had found a connector that fitted I could in theory take one 1.5mm conductor from the pin to a three way Wago and hope that the pin and single conductor would carry the current. I preferred to do away with all the plugs and sockets and wire directly from the habitation cabling into the EC700 pcb. I fitted a LED strip light with built-in PIR onto the wardrobe frame and it works brilliantly. Open the door, stick your hand in, it lights up, take out your coat, close the door, after ten seconds the light goes out. No chance of it staying on, no fire hazard.
In case you are confused, I have two motorhomes, a 1999 Autosleeper Pollensa (the one with the gearbox oil leak) and a 2019 Bourton (the mobile fault laboratory). This summer, of the two I chose to take the Pollensa to Germany for a month, and leave the fault ridden liability at home. The Pollensa will be going to Norway next year for a long holiday, whether or not I still own the Bourton.