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<blockquote data-quote="ktennies" data-source="post: 8235536" data-attributes="member: 659894">I just asked the same question in another thread after your original post and have since come up with the answer.Yes - your way in the post above will work and will keep everything in stereo.&nbsp; I did some digging and found a post somewhere that says you&#039;ll want to set the fader on the head unit all the way to the front if you do this.&nbsp; The balance on the head unit would still work normally if you needed to mess with it.Option two would be to run another RCA cable (assuming two lines per cable) from the rear outputs on the head unit instead of splitting the fronts.&nbsp; Just as with the Y-splitters, both left RCAs would go to amp channels 1&amp;amp;2 and both rights would go to amp channels 3&amp;amp;4.&nbsp; Your head unit&#039;s fader would need to be centered and I&#039;m not sure what would happen if you messed with it (might **** up your amp or speakers?) because you&#039;d be increasing the left signal to one speaker and the right signal to the other if you did that.&nbsp; The balance on the head unit would still work normally if you needed to mess with it.Either option works as a parallel circuit and keeps the preamp voltage level the same (with negligible loss by way of Y-splitters).&nbsp; I&#039;d think the first option is more desireable given the fader issue with the second, but if you already have an extra RCA cable if you had rear fill previously and don&#039;t want to have to go buy Y-splitters, the second would work.</blockquote>

[QUOTE="ktennies, post: 8235536, member: 659894"] I just asked the same question in another thread after your original post and have since come up with the answer. Yes - your way in the post above will work and will keep everything in stereo. I did some digging and found a post somewhere that says you'll want to set the fader on the head unit all the way to the front if you do this. The balance on the head unit would still work normally if you needed to mess with it. Option two would be to run another RCA cable (assuming two lines per cable) from the rear outputs on the head unit instead of splitting the fronts. Just as with the Y-splitters, both left RCAs would go to amp channels 1&2 and both rights would go to amp channels 3&4. Your head unit's fader would need to be centered and I'm not sure what would happen if you messed with it (might **** up your amp or speakers?) because you'd be increasing the left signal to one speaker and the right signal to the other if you did that. The balance on the head unit would still work normally if you needed to mess with it. Either option works as a parallel circuit and keeps the preamp voltage level the same (with negligible loss by way of Y-splitters). I'd think the first option is more desireable given the fader issue with the second, but if you already have an extra RCA cable if you had rear fill previously and don't want to have to go buy Y-splitters, the second would work. [/QUOTE]

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