wiring problems

My 2000 jeep gran cherokee is stoping while driving and a key light comes in. For instance, the power steering and gas stops. It will start back up just fine. After research, I thought it was the fob in the key but it was not. Then I disconnected and reconnected the battery terminals and it...

Im swapping a 1996 4.0 into my 1989 cherokee. Im still running my 89 harness, intake manifold, exhaust manifold, and pcm. Everything seems to be going good, but Im having a few problems with the wiring since the harness for the new engine was just cut up to save time in pulling it out. Any tips...