3GunSteve I need help. Have the sub installed and the JL Audio MX300 amp hooked up, but my question is, where does the amp get its signal input from? There are RCA jacks on the amp, but the Ride Command doesn't have an RCA output to connect them to. So, how did you wire yours up? Can you explain? Thanks in advane and if anyone else knows what I'm talking about, I'd appreciate the advice.
You'll need to route the signal from the stock system's speaker output to an adapter that will convert the high-level speaker output signal to an RCA Line-level for the amp. SOme amps have inputs to use either the RCA inputs or the High-Level speaker outputs. More info in my Post # 2799, above.
Just checked the JL Audio website and your amp has switchable inputs to use either the RCA inputs or higher voltage speaker inputs.
Here's a Google Search on Connecting a subwoofer amp to a car radio without subwoofer outputs - https://www.google.com/search?…s0KHZv6Ae4Q4dUDCAw&uact=5. Hopefully, one of the Search links will help you figure out what to do.