yes but that will not help me test what I need to test. As he said there is a chance the deck has a dedicated sub output that is only bass and if that is the case we need to switch it to the full range output. Looking at the manual for the amp there is the ability to use a single rca for the signal for all 3 speaker. There is a switch on the side labeled "input". Switch that to two ch BB rear only and use the inputs listed as "front" on the amp for your purple rca cables. Now run a set of speaker wires from the amps font outputs to the speaker and of course + to +, - to - and do not bridge them. You will probably need to adjust the gain on the amp for the new speakers hopefully the sub will remain the same.
Now looking at the pic and the manual you did have one of he rca's in the wrong spot. It might have led to a weaker singal or no signal but it should not cause the amp to power up/down or loose signal. The rca inputs are listed as Left and Right, and front/rear. You want the rcas in the two inputs(on top of one another(L/R)) all the way against the end(front inputs). The other switches you need to be sure are in place is the cross over section listed as "bandpass" be sure it is turned to off, "amp range" is set to full range and from there like I said there is just the gain controls that after it is powered up you might need to adjust.