hello all.

i've been reading about this and still not very clear about some things.

i understand that i need some sort of line converter that has set of RCAs (which goes to the amp) on one end.

does this work the same way with the non-bose stock HU? my car didn't come with the sub like the bose one does. so im wondering if there is a seperate line for subs from the HU.

i've been looking at the david's converters, and can't seem to figure out which one of these converter i need.

http://www.davidnavone.com/adaptor_products.htm

could someone explain to me how to do this? basically what im trying to do is connecting the sub amp to the HU and be able to leave the 4 interior speakers as it is.

thank you.