Finally after eight months. I put new sensors in some rock monsters that I bought and had the dealer get the computer to recognize them with the hexadecimal codes I got from the vendor. The dash showed the correct pressures but the idiot light would always come on when I started it up. Dealer could not fix that condition and said I needed to purchase MOPAR tpms. I tried all the usual fixes as suggested here like disconnecting the batt, adjusting psi etc.
Trouble shooting a parasitic drain I disconnected the battery to use an ammeter. This took about an hour to pull each fuse and test. Problem with M12 & M13 but when I reconnected the batt the idiot light went off. No more system error codes. Went thru four drive cycles and about one hundred miles and has not reappeared. So I guess the batt needed to be disconnected for more than ten minutes. Hope this helps someone with similar problem.
Now to trace those two circuits.
Trouble shooting a parasitic drain I disconnected the battery to use an ammeter. This took about an hour to pull each fuse and test. Problem with M12 & M13 but when I reconnected the batt the idiot light went off. No more system error codes. Went thru four drive cycles and about one hundred miles and has not reappeared. So I guess the batt needed to be disconnected for more than ten minutes. Hope this helps someone with similar problem.
Now to trace those two circuits.