Well Guys thanks for the great feedback on this problem! As it turned out the Arcing was in fact being caused by the Generator Battery...Who would have thunk? It also has a relationship of sorts back to the battery Distribution Box so that needed to be done. Thanks to Gary again for letting me know about that as well. Although I do have a Solar Panel it apparently didn't cause the Arc. I finally solved the Coach Relay issue after some frustrating troubleshooting. As it turns out the two Relays that were sent by PPL were "Fused" with two 5 amp plug in fuses. When I ordered both the Relays for the Chassis and Coach from PPL RV in Houston I asked Gary in tech Support if I would know the difference between the Chassis and Coach Relays because they look identical. He said the Chassis Relay would come with the two Fuses so I said well then that's easy enough....., So I completely forgot that after the successful Chassis relay install and I unpacked the 2nd relay for the Coach and it was a Relay that was fused as well......Not thinking about it I went and removed the old "non-fused" Relay and put in the newer fused Relay. After all ....all...the work in disconnecting Battery Cables, needing miniature hands in that Box. Had to get my wife to help out on some of those crowded bolts, wire connections and screws : ), etc. also, this time the Generator battery cables had to be disconnected as well so we did not Arc up the box again. After everything, no Bueno on the Switch for the Coach Batteries! No light,,,Nada. So at that point I remembered that Gary had said only one relay would be Fused and that would be for the Chassis. Eureka! Well Maybe. They must have sent me two Chassis Relays instead of one each and I installed the wrong Relay for the Coach. So yet another call to Gary to tell him both relays were identical. He said no worries just pull the 5 amp fuses from the Coach relay. Once again, seems easy enough..Said thank you to him and then tried that. No Good. So,,, I decided to de-install the new one and somewhere on this thread a helpful person mentioned that he cleaned his Relays by opening them up and it worked for him. So I de-installed the Coach relay again with ample frustration and much patience. Took it off unscrewed the plastic housing that contains four (4) screws looked inside. It was grimy a bit and had some sediment and light corrosion on the contacts. I was grasping at straws at that point so I got some cleaner/degreaser cleaned it up, said a Prayer :), re-installed it yet again...hooked up the battery connections, yet ...again 🙂 Got up and rubbed my back a few times, said another prayer, hobbled into the Rig went to the cabinet closed my eyes hit the Coach side switch, let out a deep breathe opened my eyes and EUUUURRREEEEKKKKAAA! lol. Only thing left to do now is call Gary in the morning send back that Relay for a refund and help spread the word that those Relays can be Cleaned of corrosion and they may still give you a few more years. Thank You Guys!
