Replaced rear speakers... and get nuthin'!

Hey all - any thoughts on this one? I searched around a little but am still stuck.

I've had a replacement single-din deck in my 1999 Tacoma forever, and finally got around to putting some new speakers in.

Deck is a Pioneer 50Wx4

Rear Speakers that went in are Pioneer's as well. 140 W Max, Nominal 35W, 4 Ohms. I know they are nothing great but I just needed something that would work and they've been laying around the house forever new in the box.

Got everything all plumed up, and when I give 'er hell... nada. Well, not nada, but if I move the fader all the way to the rear, you get a tinny sounding 1/6 volume music making it's way through.

The speakers that Came out were 20W 8ohm, but I looked on Crutchfield and it seems these should just be plug and play. Is there a factory amp somewhere that I'm missing?

Thanks all.

Edited to add picture of the old speaker - why is that cap/resistor in there?

 

Are the connections soldered from the deck to a harness adapter ?

Plugged into the Toyota harness ?

Poor connection or junk speakers ?

What was the rear speaker wiring connected to? Loose not attached ?

Clean the connectors with electrical cleaner .

I had the same type issue it checked out with the meter plugged together it did not work.

 

Cap/resistor is for the tweeter. I'd try switching the wires at the speaker.

 

Thanks for the thoughts. The deck has been in there for years and works just fine with the stock speakers, so I'm ruling that out. I'll try cleaning up connections

 

I totally assumed that was going to be the smoking gun - switched the polarity of my connections.... and same problem.

 

Try the old speakers? At least you could eliminate the new ones that way....

 

Could there be a setting on the headunit to use the rear speaker leads as an amp input or something, say for a subwoofer? Just a wild guess.

Also, could you have blown a fuse somewhere, on the truck itself or in the headunit?