Not sure what you got, what do you mean by "dual amp kit'? Do you have a set of 4 chnl RCA's? Are you trying to bridge 2 amps together, the RCA output from one amp to another will not be amplified. Typically, an RCA output from an amp is nothing more then a pass-thru of the signal for another amp. The terminals where the speakers connect is what gets amplifies. Most head units will have at least a front and RR/Sub RCA output. So yes, when wiring a 2 amp set, you can run a set of left and right RCA's from each output to the amp. Now, some 4 chnl amps do not pass through the signal from one set of RCA's to all the amp's chnls and will require you to split the left and right up into 2 lefts and 2 rights and plug into all 4 RCA inputs on the amp (if it's a 4 chnl amp)
What amps and tower speakers you have may help to further answer your question.