Ive just gotten a VT II Commodore. Its generally in good nik, however odd issue. First of all reverse lights do not turn on when reverse is engaged. When i apply the brake the parker lights and the brake lights come on. When im driving at night with my head lights switched on the brake lights stay on and do not brighten when i apply the brakes. I have checked all bulbs and fuses, they are fine. I have no idea what to do next and am not really able to afford an autoelectrician but i suppose that'll be the easiest solution... help?