ooh,an extra gear!!
Join Date: Aug 2011
If it starts with a jump start,could be the positive terminal isn't connecting properly.it has enough current to turn your ignition lights bit not enough to turn the starter,may explain the headlight issue,too.it would be worth checking the bus box(the bit with the fuses and wires bolted/connected to the positive terminal),again,as well
When I picked my car up,after it had been standing for a good while,the positive terminal had closed up,and wouldn't tighten enough to make a proper contact and the cables bolted to it needed cleaning to.
Hope you find the problem.