Problem finding electrical short

Ok guys so I finally found the problem! When I changed the ammeter to a volt meter in the rallye gauge cluster, the positive terminal of the volt meter was making intermittent contact with the gauge housing , shorting the whole electrical system out. I finally discovered it after removing the complete gauge cluster and checking all the connections for shorts. I fixed the problem by covering the positive terminal with double wall heat shrink tubing. Electrical system now works perfect. Unfortunately, I ruined a brand new battery (now has dead cells) and the relays in my new Daniel Stern lighting system are also fried. Oh well, can't do anything about it now so ... moving on.
Many thanks to all the A-Body members who tried to help me to solve this problem ,Greatly appreciated!!!