two amps driving one set of speakers!!??

[320de46m47]

hi all

installed bluetooth but have a problem. how to run the audio from the ULF to the speakers when they're already connected to an alpine V12 amp at the back
looks like this

pink is the bluetooth loom. in normal circumstances it connects to the HU and to cars loom at the front of the car...this would therefore drive the speakers from both ends of the car though

whats a signal processor by the way? someone mentioned it as an idea but ive no idea what that involves

thanks guys

[320de46m47]

bump

[320de46m47]

seems fairly sensible?

[320de46m47]

or a separate speaker?

[320de46m47]

final bump

there must be someone out there who has bluetooth and installed an amp and speakers????