Sub wiring on stock head unit

[pwrstrokin6.4]

I am sure this has been covered a million times but i can't seem to find the answer i am looking for. I am going to be adding a kicker 8inch hideaway sub to my factory non-audiphile 6 disc head unit. These hideaway subs with built in amp do not have the traditional high/low level inputs. they have a molex connector with a pigtail that gets wired to your speakers. Now i know i can just wire the unit into the speaker inputs and pull power but would it be better to use the adapter at the head unit to give me RCA outputs and then put adapters on the molex pigtail to accept RCA cable rather than wire them direct to the speakers. I apologize if this is a somewhat stupid question as it probably no difference either way but it just seems it would be better using the adapter with RCA inputs.

[K1LLsW1TchEd]

I have the same sub and I wired it to the rear speakers. I pulled the plastics of the rocker panels to tap into the rear speakers "I removed the rear speakers to see the color coding of the wires." Once i found the corresponding wires i soldered my connections and taped them off. ALso, there are a few power and ground auxillary wires that run in the the troughs of the door jams. I wish i had my truck to show you pictures

[pwrstrokin6.4]

I am not too worried about power, i will find it. worst case i can tap off the head unit or the purple accessory wire under the dash. I added an overhead console last week and used this wire also. I was just wondering if there is a noticeable difference between wiring from the speaker as you have or wiring it from an rca output via an amp adapter. If there is no difference i will save myself the $40 for the amp adapter and just wire it as you did. Thanks for your help I appreciate it!!

[K1LLsW1TchEd]

Save the 40 bucks. Those adapters are junk anyway

[superdutydixie]

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[SMcGann]

I wish I could remember the name of the product I used, but I did a sub integration with the factory system in a Audi I had a few years back and it worked really well. This one coverted the high level signal to a low level RCA and supposedly kept the signal "clean" it worked really well. I won't be going factory in the truck so won't be much help with the specifics here.