So i bought a new car stereo (pioneer deh-2300) to replace the factory original on a toyota corolla. I also bought an iso harness. I put the plugs in and connected the stereo but it did not switch on. I checked all the fuses, all are fine, i checked the red power wire and seems to be right at 12v.
The stereo is fine for sure as i took it to the shop and he checked that it was fine. Also the old stereo was connected with 1 plug , the second plug (having 2 green and 2 purple wires) was not in use.
Any suggestions to what i can try?