Stereo Amplifier Schematic

does anybody understand how i possibly could start Wiring my audio from my radar detector into my vehicle audio system?
my original speaker during my detector musta blew previously it simply quit and so i wired inside a speaker from the mobile phone that we can hgear although not over my exhaust and my stereo system. i understand its possiblke but simply have no idea precisely the Schematics from it. could i simply run the pos and neg wires for that audio creation of the radar directly into my rca’s goin into my stereo system amplifier thus delivering the seem from the radar through my stereo system loudspeakers? or could i wire up a classic small amplifier i acquired and concoct a splitter to splice the mono from the radar into stereo system with rca plugs comin from the radar speaker wire and fix a little speaker? or somethin?
Is not recommended attempting to connect it towards the sound system, ‘s better to connect with another amplifier/or speaker. Obtain a small mono amplifier rich in level speaker input for connecting the speaker wires in the detector straight to the amplifier.
Homemade Superregenerative FM Radio + Audio amplifier + SCHEMATICS