can i use one of these and plug my ipod straight into my car amp, via the rca's since all my speakers and sub are controlled via the one rca cable? Some original photos have not been recovered yet.

Yea I think you can, my mate did it years ago and I can't remember having any troubles with it. But just watch for clipping, as I'm not sure how much mV (milliVolts) Ipods (or any MP3 player) outputs at, and if it's below the input sensitivity of your amp then you may start to hear clipping when turning it up (and it may not go very loud before you start hearing clipping). If your amp has an input sensitivity control, just play around with that until you get rid of any clipping.

just for anyone that wated to know, got a plug from **** smith for $5 , worked perfectly, just gotta remember to activate the remote wire, (i just left the cd player connected and on, but u could make it on accesories or a switch)