can someone please advise me how to resolve my reverse lights only working when i giggle the gear shift

 

Yes. Dirty NSS (neutral safety switch) A little difficult to remove, but easy to disassemble/clean/assemble once it's out. Here's one of the better 'how to' articles I've seen.
http://bc4x4.com/tech/2010/jeep-neut...ty-switch-nss/

The NSS also prevents your jeep from starting in gear, and when it eventually gets bad enough will prevent it starting in park and neutral as well. I did it.. if you have a few tools, so can you