Can I cut off this 4pin molex connector from my computers power supply and use it for the line level input on my Rockford fosgate amp?

I'm trying to add an amp and sub to the stock stereo in my car. I know I won't have rear speakers if I do it this way but I have infinity kappa 6x9 in the front so i don't mind.

Look into getting a line out converter. They are fairly inexpensive (shouldnt be more than 30 bucks). They tap into your rear speaker signal and provide RCA outputs so you can throw those on an amp.

Get the Line Out converter for $25-30 don't be cutting into things that can be easily fixed with a $30 part. You will retain all 4 speakers this way as well, the SQ might be lackluster versus a proper headunit though.

literally like 10$


https://www.amazon.com/PAC-SNI-35-Variable-Line-Converter/dp/B001EAWS3W


I don't think I like the adjustments for the average end user but meh, and has provision for grounding if your getting a lot of feedback

eh you get what you pay for, if i was using a Converter I'd buy the best one I could

this, if you buy a shit quality converter you'll get shit quality sound.

Every bass knob I see is a pac knob, though I can't say I've messed with their line out

They make pretty shitty interfaces though so idk.