I wouldn't be put off by the scare stories if you buy a dedicated compatible wiring kit you'll have no problems.
Try towequipe.co.uk, you'll probably get the same brand tow hitch as the manufacturer supplies for half their price or less.
Towequipe sell wiring kits but you'll probabaly find you get a very good fully compatible Dedicated wiring kit thats CAN-Bus Compatible and Trailer Stability Prog compatible for your CRV car cheaper from www.discount-towing.co.uk, they also supply tow bars but towequipe have a better choice of bars for most cars.