Hooking up after market speakers

You mat have the wrong speakers

Ok so u have to hook up a certain set of speakers ever tho I put a new head unit and to two 6.5 in it

what is the rms on the speaker cause if its over 25 watts that could be a issue or its wired wrong bad connevtion or its blown if you have a ohm meter test both -+ you should get 3.5 to 3.7 ohms test it with the speaker wires off

I also got a MONO Power amplifier MRP -M1000 and a 12in audiobahan hooked up and there working but there's a factory amp didn't know if it would not let it run right

yeah you have to run a line level convertor tap into your speaker wire to get your L/R CHANNEL there are a couple different convertors they come with schematics and instructions fairly simple if you want to keep the premium sound