PO put in a new stereo which did not use the rear speakers. I am trying to reconnect the rear speakers. I have the wires for the driver's rear (green & brown) and that one works. I have tried the brn/wht and grn/wht combinations for the passengers side rear. No luck. From the wiring diagrams I have it shows the passenger's side rear is brn/wht and grn/wht. Is that correct?

The original booster has been removed and I just have wires in that area.