[jonboywalton75]

I had it booked in today for a diagnostic check at my local ford garage  but cancelled it when I was told earlier that running with  sidelights trickle charges the auxiliary battery.
I checked this yesterday and it seems  that this is the case.
I thought I would try it next week and see how long I can work for. with the amount of driving I do.
I will be using my 66amp battery.
We'll see how it goes before I think about remapping the ecu,  but that could be an option if Ford's will do it for me.
 

We would be very interested to hear the result.

I would also order a 12 digital volt meter and switch and attach it to your aux battery so you can see what's going on at an instance.

Cheers for all the advice Spruce and everyone else for that matter
I'll see how it goes next week and update you all
my local auto electrician was also baffled
These new vans seem overly complex or is it just me
getting older

[jonboywalton75]

Scr working well now
Used 44amp battery with it this week, spruce was right, no good. I should've realized this from the start.
Buying 110 amp leisure battery today
Pure was correct about the scr not kicking unless you use the side lights, this is not a problem though.
Glad to be sorted, thanks lads

[jonboywalton75]

Since I bought my 110amp Leisure battery I haven't charged it once and the flow is still spurting out
Very convenient way of working 

[Positivity]

I've got a feed going from the van battery to the pump connection, takes about 30 seconds to switch over for low power pump battery emergencies, could be even quicker if I fitted a switch but use it so infrequently can't be bothered but it is a good backup to have when you ever need it!

[jonboywalton75]

110amp  finally needed charging today after 4 full days

[Spruce]

110amp  finally needed charging today after 4 full days

These leisure batteries work well when to keep the charge level up. I charge mine every second evening and if the battery has worked hard, the same evening.

[jonboywalton75]

110amp  finally needed charging today after 4 full days

These leisure batteries work well when to keep the charge level up. I charge mine every second evening and if the battery has worked hard, the same evening.

Spruce,  I have the scr working now,  surely I shouldn't need to be charging every night?
the reason I went for the scr was to negate the need for constant charging