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Originally Posted by liam123 i have a grande punto sporting and want to keep existin head unit for blue and me a steering wheel controls. i do not have the factory sub in the car and will add 2 subs and an amp. i have the pre out rca cable but dont know how to wire it into the head unit can some one help me with pictures please desperate as wont it to work as soon as possible thanks |  |
Uuuurm its a dud i dont think it will work unless somebody know anything otherwise.
If you want preouts you will have to get a High level line converter but that means that you will loose the speaker connections so you will have to amp up every speaker in the car.
There is also another thing that taps into the speaker wires Have a look in the ice section MortyMort has fitted one of these.
Well theres a couple of thoughts just Holla if you need any more info.