volvo tow bar electrics not compatible with Alko ATC?

[Rentagas]

Originally Posted by UKTech

Does anyone know if there is anywhere to get the various towing wiring diagrams for different Volvos?
Guess it would be a good idea to chat this problem over to everyones advantage.

UKTech

There does seem to be a wealth of knowledge and experience on here. On this and other forums it has been stated that some manufacturers including Volvo do not by default wire tow bar electrics properly without explicit instructions.
However most punters don't know what these instructions might be.

If you install a tow bar with a new uk manufactured caravan you might expect the safety features on your caravan be powered and arrive at your destination with a cold fridge and a charged battery. If you choose Volvo to install your tow bar this will not be the case. Volvo may argue that they can't hope to comply with every permutation of uk caravan but in fact there is a fairly clear practical standard and a very clear ISO standard to adhere to.
Of course Volvo's reticence to provide a modern tow bar is not mirrored by it's large presence at caravan shows where it promotes the towing ability of it's cars. Clearly tow assist is a fantastic feature of the xc60 but it might be an idea for them to get the basic electrical connections right in the first place.

Perhaps a properly authored FAQ or "sticky" is called for.