line out converter

if i want to hook up a sub amp to a stock head unit how do i hook up the line out converter to the head unit just quick clips? and would it just hook up to the front speaker wires ?

 

I've only ever used them in cars and tapped into the rear speaker lines in the trunk to keep from having to run the RCAs through the whole car. Seems you could use either if you're putting the converter in the dash.

 

sounds good thanks yea im going to try to run them off the fronts

 

whats the best bang for the buck on these i want to order today