Hi all,
 I have finally taken delivery of my second hand Talbot Avalon. All seems 
well everything seems to work on gas and full 240v electrics.
 However I seem to have a problem with the 12v side of things. The motorhome 
has a Zig CF8 unit in it. The 12v works fine when switched to the driving 
position, but there are no 12v when in the parked position.
 I have checked the second battery and it has only 10v in it so it would 
appear that this is knackered. That in itself is not an issue I can get a 
new one of those, but my problem is it does not seem to be charging. The 
main battery has 16v going to it when the van is running, the second battery 
does not seem to be getting anything.
 Does anybody know where the charge comes from for the second battery on 
these motorhomes? Does it come direct from the alternator or via the Zig 
unit? If it comes through the Zig unit is there a seperate fuse for this 
circuit? All the fuses are ok that I can see on the Zig unit.
 Any help would be appreciated, if not does anybody know of a good 
electrician in the Manchester area who knows about these systems.

Thanks,
 Neil

In message <Fa4xm.11751$Fu1.6593@unlimited.newshosting.com>, Barno 
 writes
>Hi all,
>I have finally taken delivery of my second hand Talbot Avalon. All 
>seems well everything seems to work on gas and full 240v electrics.
>However I seem to have a problem with the 12v side of things. The 
>motorhome has a Zig CF8 unit in it. The 12v works fine when switched to 
>the driving position, but there are no 12v when in the parked position.
>I have checked the second battery and it has only 10v in it so it would 
>appear that this is knackered. That in itself is not an issue I can get 
>a new one of those, but my problem is it does not seem to be charging. 
>The main battery has 16v going to it when the van is running, the 
>second battery does not seem to be getting anything.
>Does anybody know where the charge comes from for the second battery on 
>these motorhomes? Does it come direct from the alternator or via the 
>Zig unit? If it comes through the Zig unit is there a seperate fuse for 
>this circuit? All the fuses are ok that I can see on the Zig unit.
>Any help would be appreciated, if not does anybody know of a good 
>electrician in the Manchester area who knows about these systems.
>
>Thanks,
>Neil
Generally the charging of the second battery comes directly from the 
alternator but through a relay which is triggered by the alternator 
output.

16v is a bit high for vehicle battery charging, should be just under 
14v, which suggest a faulty alternator regulator.

Try to find the relay and see if it is switching - there is probably a 
fuse in the circuit.

If you  have a handbook there may be a circuit diagram in there.
-- 
hugh
It may be more complicated but is it better?

Had a similar problem with a Talbot Express - no charge going to the leisure 
battery - turned out to be the in line fuse which is fitted in the offside 
bulkhead in the engine compartment. Once this was replaced problem was 
solved and battery charged normally. Good luck!

Jock

"Barno"  wrote in message 
news:Fa4xm.11751$Fu1.6593@unlimited.newshosting.com...
> Hi all,
> I have finally taken delivery of my second hand Talbot Avalon. All seems 
> well everything seems to work on gas and full 240v electrics.
> However I seem to have a problem with the 12v side of things. The 
> motorhome has a Zig CF8 unit in it. The 12v works fine when switched to 
> the driving position, but there are no 12v when in the parked position.
> I have checked the second battery and it has only 10v in it so it would 
> appear that this is knackered. That in itself is not an issue I can get a 
> new one of those, but my problem is it does not seem to be charging. The 
> main battery has 16v going to it when the van is running, the second 
> battery does not seem to be getting anything.
> Does anybody know where the charge comes from for the second battery on 
> these motorhomes? Does it come direct from the alternator or via the Zig 
> unit? If it comes through the Zig unit is there a seperate fuse for this 
> circuit? All the fuses are ok that I can see on the Zig unit.
> Any help would be appreciated, if not does anybody know of a good 
> electrician in the Manchester area who knows about these systems.
>
> Thanks,
> Neil

Thanks for the pointers guys,
 I changed the second battery today and found an inline fuse in the positive 
connector, it was hanging on the battery tray and got all corroded and 
blown. So I replaced the fuse and holder and now all is well.
 I thought that there was on power from the second battery because it was 
flat but it turns out it was this blown fuse as well.

Barno.