@Jim Lusk , saw this alternative not to long ago as well!
2011-15- Challenger, 300 and Charger. Looking at the wiring on this unit, it looks to be the same, + and - and then 3 wire coming off of it. I do know that if 2 of the wire are the same colors, they are not to be used and that the 3rd is the one that activates it. I'm going to go and try and find one in a local yard here and test it out. From what I'm seeing, you will need to make sure you get the High Pressure hose as this is a bolt in with an O-ring as opposed to the Volvo threaded connection.
Not sure about room wise do to the way it installs, still a good alternative to the Volvo ones if it works out.
