But I also agree with Boaz. If you decide to get a back-up light - always a good idea - the Sipik 68 would be my first recommendation. I have bought a few of these http://www.ebay.co.uk/itm/330560956221?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 ,
for @ $8 you can't go wrong.