Not sure if 4 point relay is working

[timthemod]

I have a leisure battery which is supposed to run a the fridge when engine is running and also has a 12v feed for lighting which works at all times.

Relay has four points number's 30, 85, 86, 87, wiring is positive from leisure battery, negative from leisure battery, wire from relay to fridge, wire from relay to lights. What wires go to what relay numbers?

Relay is similar to this:
http://www.ebay.co.uk/itm/70-AMP-AUTOMO ... 232de4ad82" onclick="window.open(this.href);return false;

Thanks

[MidLifeCrisis]

You're missing the 'trigger' wire from the alternator in your list of wires - this wire triggers the relay when the engine is running;
Everything else is explained in 'much' detail in the Wiki at the below location;

https://club8090.co.uk/wiki/Ca ... it_charger

It is a bit of semantics but the fridge is usually powered from the main battery when the engine is running (rather than the leisure battery). But as the main batt and leisure batt will be connected together by the split charge relay (you have one of those too right?) then it doesn't really make a lot of difference (I don't think)

[timthemod]

Thanks will check out the wiki link

Yes I do have a relay for the split charge

[California Dreamin]

A normal 4 terminal relay is fine for split charging but does not offer an isolated feed (by isolated I mean on provides a feed with the engine running)....you either need to use 'two' relays' or one that has a dedicated fridge output.
Trouble is, used on 12 volts the fridge will happily run off the relay but once the engine is stopped will continue to draw power directly from the leisure battery, which will last a matter of hours depending on capacity.

You need one of these types of relay with a dedicated fridge output:

http://www.autoelectricsupplies.co.uk/p ... tegory/149" onclick="window.open(this.href);return false;

Martin