Amplifiers contain voltages high enough to Kill you even after the amp has been powered Off !!! If you don't have enough electronic experience to identify and discharge the Filter Capacitors which contain these Deadly voltages, take your amp to a Qualified tech. If you don't know a qualified tech in your area, post a request in the alt.guitar.amps newsgroup, the folks there will be happy to help you.
The Mod:
1. Get an RCA to 1/4" cable from your local electronics store or Radio Shack.
2. Plug the RCA end of the cable into the output jack of the reverb pan.
3. Plug the 1/4" end into the input of the Normal channel.