That Ravelco item was around in the '90s! There are about 6 different "keys" (end caps). There were many opportunists that made the rounds of the new car dealers (back then) selling them kits for installations. Which I built for our new car dept PDI people to install. It's no more than a fancy way of interrupting the starting circuit, but with the correct "key", it all works. NOT WORTH IT!!! The new car dept sold them for over $100.00, but the basic cost was like $15.00, so they made some good spiff money on them . . . which was needed when the customer lost their "key" and had to return to the selling dealer to get one (IF they were available). To their credit, they didn't sell close-by dealers the same kits! BUT, after the initial sales reps soon found out it was a losing market, they vamoosed and another sales rep came in, just about the time the complaints started happening. So they left as the original sales people had gone on to other markets of the USA (we never heard from them again). End result, we ended up replacing them with a basic keyless entry system and the customers were much happier with that!
Personally, I wound NOT put anything like that on a modern car, period!!! Might cause failures of other systems in the vehicle, which is not good. On a 90s car, most worked ok, but even some of them didn't!
Installation? Have to cut wires under the instrument panel, then find a convenient place nearby to place the key receptacle. The key must match how the item is wired-in on the vehicle. If the wrong color coded wires (for the particular key) are used, nothing will work as the key completes the circuit for the starter to work.
The issue with Chrysler's anti-theft system is well-known and NOT specific to the vehicles referenced! It's been a "known issue" for a few years now.
And, for the record, we didn't make any money in parts on getting the units ready for installation. Although I wore out a few diag cutters snipping the wires not used.
So, I highly recommend doing something else than the referenced item!! With all of the computerization on modern vehicles (of which Chryslers seem to be more picky than some others), doing ANYTHING not factory-authorized to the wiring harness can void any related warranties.
With the smaller numbers of Hellcats and such built, it seems they would be stolen for parts and powertrain items much more than other vehicles. Any owner who has no theft insurance on such a car And/or parks it in a high-theft area, knowingly . . . .
Just some thoughts and observations,
CBODY67