Line-out convertor beginner help needed

All of the installs I have done have been using an A/M headunit with RCA's. I would like to keep my factory headunit in my truck and was told I would need a LOC to create some RCA outputs.

Basically I'm just looking for some tips on how it should be adjusted. I noticed there are 2 gains on it. The signal is being used for an amp that will be powering 2 10's.

I was going to tap into the rear speaker lead, and set the gains about 1/2 way. Then adjust the amp from there. The LOC is not wired in yet so I haven't been able to mess around with the adjustments.

Any tuning/install advice would be greatly appreciated. I'm just looking fro some tips before I continue with the install.

Thanks in advance, Steve

BTW: Truck is an '02 Dakota with the Infinity Stereo.

You can measure output voltage at the amp speaker terminals for adjustment of the LOC.  With the amp gain all the way down, and head unit at full useable power, connect leads of the DMM to one channel, then the other.  Adjust output to 4 volts, or if you can't get to 4 make each channel the same.  Then adjust amp gain to the output voltage you want to send to the subs.  It is best to use a CD with a sub frequency, about 50 Hz, for a steady reading of AC voltage.

Otherwise, if you don't have the meter, you can start at halfway on the LOC's.  Keep in mind that the best signal-to-noise ratio will be achieved by adjusting the LOC's to the highest useable AC voltage for input to the amp.  Also, you should position the LOC so that you can easily get to it later for slight tweaking of the gains.  Sometimes the sound can be cleared up by just a slight turn down (or up) of the LOC gains after you have done the initial adjustments and have had the time to listen to some different music sources for awhile.

thanks for the help!

Anyone else have any tips?