I have an early Mk4 Golf. I can release the bonnet as far as the safety stop from the cockpit lever. To fully open the bonnet I have to pull on a second lever which emerges from the radiator grill. This is broken. Thus I cannot open the bonnet. To compound my problems, the battery is now flat. 1. Is there any way I can open the bonnet, or will it have to be done professionally? 2. I have heard the battery can be charged from an external source using the internal "cigarette lighter". Is such a device available and, if so, from where?