V reg Trooper leisure battery fuse layout

Hi,

Can anyone let me know what fuses need to slot into leisure battery fuse compartment on a V Reg T4 Trooper?  The middle one is for the internal lighting, so I assume the other 2 are fridge and heating but I don't know which is which and what rating they should be?

Thanks

Dan

I know it's a bit of a pain and you may wait a while, but the safest bet would be to ask A/S directly. The unfortunate thing is that A/S change the wiring apparently at random, so it may not be safe to assume that what was fitted to, say, a 1999 Trooper, is the same as fitted to a 2000 model.

Have you checked the Owner's Manual for a wiring diagram? By the early 2000's, A/S had actually got quite good at supplying one, though they often seem to be a bit "generic".

How did the fuses come to be absent? If a previous owner removed them, it would worry me that there ~might~ be an issue with the wiring...

I'd guess you have something similar to the wiring shown below with your 30A fuse supplying all the 12v habitation electrics via the EMC relay.  On of the other two fuse holders will be for the 15A fuse to the fridge - you need to check which is wired.  Its not unusual for one or two of the fuse locations not to be used.

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Thanks for the replies, I'm away at the moment and the owners manual is filed away at home so I'll check when I'm back at the end of the week.

If that doesn't provide some 'illumination' I'll contact A/S

Cheers!

Peter's circuit diagram may be good in principle, but be warned, you must not fit a 70A fuse on the split charge circuit in a ~2000 Trooper! Ours (MY 2005) is fused at 20A.

How did the fuses come to be absent?

AH well...confession time, the absent fuses are because the internal lights blew a fuse in a wet Dorset campsite at 11pm and I swapped them over in the dark and rain, and dropped the ones I took out....I very rarely use the fridge and have never used the heater so just wanted to get the lights working....but then I couldn't recall what I'd whipped out....

Ah, that's Ok - if they had been removed by a previous owner I would be worried that there was something seriously wrong with the wiring!

A pretty safe approach is as follows: Take a low-value fuse (say 5A) and put that in each of the two fuse slots in turn. Observe what works in each case. You can then check the spec of the fridge, but I doubt a Trooper's fridge will need any more than a 15A fuse, as shown on Peter's diagram. Similarly if the other is a diesel heater, it's pretty easy to find the spec of those online - they only take significant power at startup when the glow plug/pin is on. The spec should allow you to infer what fuse size to use.

For comparison, our Trooper has a 20A fuse for the split charge and a 5A fuse for the heater - though our heater fuse is not in that group of fuses.