Hi, does anyone have the Scheiber BIP 36.12854.34 Instructions and/or the wiring diagrams available? This is for transformer from a 2007 Troll 540 GT - this is a version that doesn’t have a charger for a leisure battery. I’ve been on the Scheiber website and found the download for the Scheiber BIP 36.12854.33 Instructions (Note: only one digit difference(!) and no wiring diagrams). I have no idea if the ‘33’ is very different to the ‘34’ but I assume they numbered them differently for a reason (maybe?). The other code on the label is TRA W 23 J, if that means anything to anybody? The search facility on the Scheiber website only responded to the number code.

My issue is that the previous owner of our Troll has possibly ‘re-wired’ the 13 pin towing plug and I may need to trace some wires back from the towing plug to the BIP to check what they actually provide power for.

Here are the variations (or maybe they’re not his and someone can correct me?!). I have checked these connections thoroughly and noted the numbers of the pins.

Pin 9: Usually Orange but currently connected to a White/Blue wire usually designated for pin 12
Pin 10: Usually Grey but currently connected to a White/Red wire usually designated for pin 13
Pin 12 Usually White/Blue but currently connected to Orange wire
Pin 13 Usually White/Red but currently connected to Grey wire

As you can see these wires are direct swaps with each other. Was this a mistake by the previous owner or, is this a standard European configuration (that I can’t understand) for a 2007 van that didn’t have a leisure battery when sold?

Any observations very welcome.
Cheers!

Hi Peter, As far as I know the last 2 digits at the end of the part number, 36.12854.xx refer to minor revisions in the build, where perhaps part numbers of internal components have been ammended or updated, but the functionality remains the same.

Copies of some Eriba Manuals are saved to the forum's Technical Help Files section HERE - the 2004 manual should be close enough to what you have fitted.

Your BIP is shown on page 156.

As you will note, the individual wire colours of the cable that connects the 13 pin plug to the underfloor distribution box aren't defined in the drawing - probably because not all cables follow the same colour scheme.

If you look at 3 or 4 13 pin plug connection drawings on the internet you could well see a variety of wire colour schemes for the auxiliary pins 9 - 13.

Many cables will have only 12 conductors and not 13, as pin 12 of the plug isn't allocated a function.

Many thanks to you both!

That's a great addition, Colin.

Page 156 for years 2004 and 2007 are the same and appears to be a 2003 document as shown in small type at bottom right of both pages.

Hi Pete, I've spent the day converting a customer's batteryless Eriba system to a battery / charger system.
I've done loads of these which usually entails running an additional cable from the underfloor JB to the BIP and also modifying the BIP to remove the now redundant transformer and dc rectifier, and to ensure the awning light is diasbled when connected to the towcar.
I also add a changeover relay to ensure the leisure battery is charged from the towcar only when the engine's running.

The colour scheme I have on this one ties in with most others I've completed:

Pin 9: Orange, Permanent 12V for Charging (B+)
Pin 10: Grey, Switched Ignition 12V for Fridge (D+)
Pin 11 White/Black, 0v Return for Pin 10
Pin 13 White/Red, 0v Return for Pin 9

The wire colours for pins 11 & 13 may be transposed but that's not critical as they both end up at the towcar's chassis.
Pin 12's wire is White/Blue but unterminated in the junction box.

I hope this helps.

Hi John, that’s very helpful and all this info takes some of the ‘Googling’ pressure off. Cheers.

So, looked again at the 13 pin diagrams on Google and, as you say, quite a few variations. Nonetheless, the most common format, as you outline from your job yesterday, is orange for pin 9 and grey for pin 10 with ‘striped’ wires usually (but not always) going to 11, 12 and 13. as you predict, in my case 12 is not used at all on my tow bar wiring. (I notice it’s often designated as a sensor to enable a tow car’s computer to make adjustments when a caravan is attached - definitely not an issue on a 2013 X-Trail!).

My concerns about incorrect wiring on the caravan plug are based on the fact that when I opened the plug to trace an earth fault, not only did I find two wires floating around, completely disconnected but, nearly all of the other wires were stuffed into their contacts with little or no care about stray strands protruding all over the place. Evidence of other bizarre lash ups by the previous owner (PO) tend to make me pessimistic. The obvious solution (in my very limited experience!) seems to be a continuity check on each wire back to the distribution block. Does that sound do-able or is it overkill?

Certainly, simply swapping the orange and grey cables back to pins 9 and 10 respectively would be easy but I’m concerned that I might inadvertently connect up a 12v+ supply to something that wouldn’t appreciate it. Similarly, having never used this current vehicle to tow the van, I’m loath to connect it with the PO’s configuration for the same reason.

Looking at the wiring diagram on page 156 in the manual, I can see that the distribution block is numbered 1-13 (missing 12 of course) so I’m hoping I’ll be able to see and check that the wires direct from the towing plug. I'm hoping to sort continuity from the towing plug to the distribution board and beyond on pins 1-8 today at least. Slow work for a novice. :-)

I've attached my spreadsheet comparing data from the Caravan Club, what Ive found so far on the van and what I've tested for on the X-Trail. Not sure how valuable it is but its helping keep things straight in my head!

As a side issue, we currently have a leisure battery fitted which we charge separately form the BIP system, direct from the mains. I know this might be asking you how long is a piece of string but what would the ball park figure be for a conversion like the one you're describing here?

It would be good to test for continuity on yours to ensure it's safe to plug into the Nissan.

If you make up a jumper wire, say, 6" long with a male crimp connector on each end, you could use this to bridge each wire to a reference wire, eg the thick white on pin 3 (earth return for mandatory road lights) and buzz these out at the front plug.

Once you're happy with those, do the same from the JB to the BIP.

Best if we use PM to chat about the conversion job, but I have to fly - another busy day!

Will do. Cheers for suggestions. P

WeZe

Well, happy to report continuity from towing plug to distribution board all good, as is continuity to BIP and various lights in and around the van.

It turned out that the Orange and Grey cables, respectively pins 9 and 10 on the towing socket, did indeed match up to the interior lights (orange - pin 9) and the 12v supply to the fridge (Grey - pin 10). Consequently, the White/Black cable was reconnected to pin 11 as the return for the fridge (pin 10) and the White/Red cable reconnected to pin 13 as the return for the interior lights (pin 9). (Hope that all makes sense!) The PO apparently had some kind of stressful experience that resulted in two sets of wires being reversed unfortunately.

All facilities on the caravan now functioning as required - bit of a first!!

Thanks very much for support.