Just picked this up and did not realize putting it in my car would not be so simple. It is a Lexus ES 350...not much room. Plan is to put the main unit in the trunk and run the microphone and control head cables to the driver's side by the center consule. So far so good. However, there is the issue of the speaker which is in the main unit headed for the trunk. It was suggested to me simply to run an audio cable from the trunk to the center console where I have an aux input.....I could run the speaker through the car's audio. However, both speaker jacks are mono. The Lexus aux has the following configuration tip left audio, first collar, right audio, second collar, ground, and third collar video. Anybody know how to configure this so I can get mono coming out of both my left and right car audio speakers? The 5100 has two external speaker jacks. Maybe there is a way to join the grounds and run each positive to the first and second collars of a four connector 3.5 mm plug. Use a stereo cable using the shield as ground. Splice one end to two mono cables joining the shields....then run left to one mono plug and right to the other mono plug The other end will go a four connector plug but the third video collar just will not be used. Do you think this will work?