I've got a solar charger but the cigarette lighter connection is useless. It comes with crocodile clips that you can attach instead but I don't think they'd stay on if you close the bonnet (2001 Vectra (b) Sri 130). Can you buy stubbier crocodile clips that would allow me to keep the solar charger connected directly to the battery and keep the bonnet closed? The car is SORN atm so I could do with a solution to save setting up the charger every couple of weeks. TIA Dave