How are you wiring the Pioneer DEH 1400 to the Renault?
The Pioneer uses standard radio wiring, you must not have power and ground connected properly if you have nothing happening.

left front +white,-white/black
right front +grey,-grey/black
left rear +green,-green/black
right rear +purple,-purple/black

Hi I was wondering were can i buy any one of these head units, i really want the Pioneer Deh-p9650. but i cant not find one place were i can buy it. i usto have the 8400mp like 6 or 7 years ago but i sold it and now i want a nother 1... i would really like to buy the Pioneer Deh-p9650mp so if any one can point me in the right direction i would be more then greatful.

thanks

DEH-P9650MP ??

the wires will not be the same. the best thing to do is go to the nearest place where they sell radios and they do have to sell the two plugs that have the same wiring diagram as the radio and then direct connect to the two plugs on the car.

If the factory harness is still in tact, you can buy an adapter at Best Buy for about 20$ or ask to see one and write down the pins and wires then match it up and cut n splice to your new deck. Hope this helps

ask them for the aux cd changer input

http://audio.manualsonline.com/manuals/mfg/pioneer/deh-2800mp_2.html

Hi and welcome to FixYa,

You would need a special adapter that connects to the speaker wires of the Pioneer DEH-2000MP and converts them to line level RCA ports. Something like the image below and available from here or most car stereo stores.

Good luck and thank you for using FixYa.

You need to get an installation kit that also has the universal wiring harness to connect to the factory harness in the car. That way you only need to match the wire colors of the Pioneer harness to the wire colors of the universal harness and made good connections and insulate those connections. Then the Pioneer harness plugs into the Pioneer radio and the universal harness plugs into the factory harness in the car.

Let me know if this helps, or if you need more help.

Dave

the only thing i can suggest is to make sure that your positive and negative wires on the speaker wires are connected right and if they are then the radio is bad, i would try a different stereo and see if you have the same problem.