rigging sub into bose audio need help

[web15]

i have a 96 maxima

the bose audio in my car has a minature amp for each speaker.... the stereo puts out a weak signal to the speakers so when i tryed to splice into the wires the sub was getting very little signal to where i could barely even hear it and the cone was bearly moving... and acording to the my manuel there is no extra audio output on the stereo that puts out a strong enough signal... the sub i am wireing up is not expensive at all and nether is the little 200 watt amp on it.... the amp is for a 4 way high end out put which i have bought an adapter to convert four signals into 2. ... but my problem as i stated earlier is i cant figure out how to rig the sub to where it is getting enough signal... any help is much apreciated....

[joe603]

You need a device that can convert the high level signal from the stock system, to the input of your amp for the sub. There are many options for you, but the cheapest would be to buy an amp that can use the high level signal to drive your sub. The best speakers to "steal" this signal from would be the mid-bass rear seat area speakers, or the rear deck speakers. Splicing will not cut it, you have to use the signal dedicated to the amp or converter device.

Another option is to use a high-level signal converter. JL audio makes one, and Audio control does as well. Google it to find out the details.