Speaker Splice Location

[jerrygp]

I hooked up an AudioControl LC7 in between my 2007 Mazdaspeed non-Bose factory radio and a JL Audio 300/4 4 channel amp. I am getting 12v power to both the LC7 and the amp but no sound. Everything is properly grounded. I cut the factory speaker wires just behind the factory radio plug-in behind the radio and attached 14 ga speaker wire from the plug wires to the speaker level inputs on the LC7. Was this a good location to splice the wires or is there some sort of mazda processor farther downstream that I should have spliced in behind? Also...if I hook up an ohm meter betweem the plus and minus speaker level inputs on the LC7 and then again to the speaker outputs on the amp, would I get any reading that might be significant in diagnosing my problem? Thanks for any help...

 

[jerrygp]

Found the problem...the LC7 sound processor has an auxiliary input and the unit was set for that. All I had to do was plug in the aux input selector and change over to the main inputs.