Need help! Rca wiring to 4 channel amp

[SQ SUBARU]

New to this forum this my first post, so give me some help, lol.

I just have one question regrading the correct way to wire my rca cables to my 4 channel amp...

I have a kenwood headunit with 3 preouts ( front, rear and sub),

A 4 channel amp with front and rear rca inputs. And I'm BRIDGING the amp to (150 x2 @ 4 ohms)

And I'm running a set of 2 way components up front off their passive crossovers. Also NO rear speakers, just front stage.

My question is how do I hook up the rca cables from the headunit to the 4 channel amp?? (So it makes it stereo)

Also my 4 channel amp has a gain dial for the front channels and another 2nd gain dial for the rear channels. So should one gain control one side of the car and the 2 nd gain dial control the other side of the car? Or just one gain to do all the drivers ( tweeters and mids)

Should I do it like this picture:

(3 rd post down)

http://www.pakwheels.com/forums/car-entertainment-electronics-gps-navigation/143353-how-bridge-4-channel-kicker-amp-expert-help-required

OR, have the headunit front rcas going to the amp L or R inputs and use the rear headunit rcas going to the amp L OR R rca inputs? So basically having 2 runs of rca cables (pairs)?

(Then just leaving the sub rcas left on the headunit ( for the subwoofer)

Thanks heaps for any help, my mind is gone on this so need it explained.

Cheers.

[truthsayer]

Ok, take front rca's L-R out from head unit and plugin front Rca's L-R to front channel on amp. Then take your subwooffer Rca's L-R from head unit and plug into amps rear channel L-R. I assuming you want to bridge for your sub. So only bridge the rear channel on the amp and run that to the sub. Sorry getn ready to zonk out so i hope i understood your question right.

[SQ SUBARU]

I'm running a 4 channel amp, having it bridged down to 2 channels to power my front components speakers, not a sub I have a mono amp for that so no worried about that yet. Just need to hook my rcas up right for the front stage.

[jmsonoma03]

i would wire it like in the diagram to keep it in stereo..