We are negotiating the purchase of a one year old Honda crv. It will have to have a tow hook fitted, and we will probably get the dealer to fit a genuine Honda part. Looking at Honda's accessories web page it mentions a Continuous Battery line. Now I understand that the purpose of this part is to provide power to the van even when the engine is not running, so that the fridge will still have power, am I right, it would be an extra £200.00. Not sure if we need it.
I am correct in thinking that the 13 pin socket provides battery charging, and fridge power while the engine is running.
Firstly, there is no such thing as a genuine Honda part. All dealer parts are manufactured independently and then have a corresponding branded badge stuck on which they charge around 20% for the privelage and the same applies with the towing electrics too. Most likely the towbar will be a Brink or Witter and the towing electrics manufactured by a Japanese or German company so you may be able to save a few hundred quid if you have the towbar and electrics fitted at a professional towbar fitting company. As long as you have the official receipt that the work was undertaken by a professional company that is all you need for insurance and any warranty included with the vehicle.
Dealers are not towbar fitters by trade so they may contract the work out anyway increasing the price even more.
I very much doubt that it will be to power the fridge when the engine isn't running, as that would flatten the battery very quickly. Fridges are always run through a relay system so that it is only powered when the engine is running.
I had a 2010 CRv and it was fitted with a removable towbar by the dealer. cost was £675 including dedicated electrics cannot remember the towbar manufactuer but I think it was Bosal. Informed it was a 4 hour job as a line was run direct from the battery which involved several pieces of trim being removed. The battery was not charged or fridge run unless the engine was running.
As the vehicle will still be under warranty any ensuing problems with the electrics/electronis will not be covered by the warranty if the towbar is fitted by and independant fitter unless this has been arranged by the supplying dealer
I never use a main dealer to fit my tow bar, as they often pass the work onto a third party independent dealer, which about doubles the cost.
I drive a company VW Golf, which gets changed every two years, so got Indespension to fit my 13pin tow bar back in January, fully wired including use for caravan using dedicated cam bus electrics cost was £350, which is around £100 less than I paid last time from a different company.
I can't see what this continuous battery lead is used for, I know that there is a spare pin on the 13 pin socket. As for the cost of fitting by a dealer. Their prices are not much different to towsure. We have a local tow bar fitting company, but I want to avoid them as they are rude and expensive.
I assume they are talking about Pin 9 &13 (leisure battery), and Pin 10 &11 (fridge).
It is better to have them fitted and have full functionality on the van.
I don't know the Honda specifically but these circuits are both usually fed from the battery as they are higher current and it is not unusual to have an independent circuit fitted.
You must get them to confirm you are getting dedicated wiring harness.
It appears that they have quoted with a bypass wiring system which is the cheapest option, the dedicated wiring loom is £150 extra so with fitting then £200 is Ok.
Be hardfaced and tell them the towbar is a dealbreaker and you will hang on for one with a towbar already fitted. Then hang up. Wait for them to call back and point out that if you wait for one with a towbar you will only pay the same price as there vehicle. Parts with a dedicated loom fitted are about £300 retail, this would be a fare cost to you.