Adrian
Have fitted a three way Mos Fet and Maxima Batteries (well Gert did) and i am very impressed. 2005 G4 Defender
Please click on the link below to view my gallery.
http://photo.net/photodb/folder?folder_id=579125
Re your split charge system, not very nice in my opinion, they have used an ignition controlled 120 amp relay (my part number 0-727-18) connected buy 35 amp wire to the main battery and 120 amp alternator (you could start a nice fire here if you wanted!) It may only become a problem if your second battery is nearly flat and your 120 amp alternator would want to push that sort of current up the small wire. Get some one to do the job properly with a 120 amp Moss Fet technology charge splitter that can handle the current.
I have had trouble with Optima red top batteries on my rally vehicles (yellow tops seem to last ok, but the red tops die in 12 months) I now replace them with Maxima batteries that last much better (not replaced one yet) and slightly cheeper!
Cheers Jim Carr
Member, G4 Challenge Owners Club
2006 G4 RRS, 2003 G4 DII, 1998 Paris/Dakar D1, 101FC, SIIa, FL2 i6
Regards
Paul PaulCurrently - Porsche Cayenne
Paul
Currently - Porsche Cayenne
Previously G4RRS - BV55 YZD - Team Vehicle 2006 Bolivia Stages 3 & 4 & G4 110 BP52GJE 2003 South Africa - Vehicle No 61
Current red top position... (sorry this shot is a little blurred)
what you can see here is the many connections to the +ve side of the battery one of them being from the +ve side of the yellow top. The two -ve wires one to earth and I think one to the winch. The cable route for the +ve side is......
along the bottom of the bonnet seal resting on the top of the layer of wires, neatly cable tied into position.... to this durite relay just behind the fuse box
(The smaller wires from the +ve term go to a 30A inline fuse holder and then off to the inside of the car - presumably to the power outlets)
from this it runs to the +ve terminal on the red top...
The negative side runs to the front of the car and is bolted to the bodywork here....
to the bolt in the centre of the photo. This is just in front of the air filter box.
Remembering basic physics from school they are wired in parallel. As for a "split charging" system I don`t know what I am looking for?
Does everyone have a 120 amp alternator? Which is what I have; i.e. has mine been upgraded because of all the surplus power requirements???
this shot is upside down but defintely 120 A and 14v!
Are other Discovery IIs like this?
Also What is secondary air?????
Wolfman
any chance of piccies as to where the charging system is routed to the yellow top and of course the original red top
have you a split charger or are they wired parrallal
regards
martin 2003 Stage 3 Event Vehicle
D2 V8i ES
Founding Chairman G4 Owners Club
the yellow top auxillary battery is mounted so
and was fitted to the car when I bought it, the chap I bought it from did not say he did it so I assumed LR did it.....
On further investigation all the additional sockets are live with ignition off at 13.2v - therefore powered by this yellow top.
I take it you dont have one fitted?