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I cant figure out how to get the sub light to turn on..with the subs on my pioneer DEH-p4700MP

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Did you connect the blue amp turn on lead to the remote input on the amp?

Some headunits have two blue wires. One is for the antenna and the other is for the amp. If you have sound on the radio but not on cd then the wrong blue wire was used. If you can give me som more detail on the wiring I can help you further. You can test to see if the amp remote turn on lead is providing power to the amp with a meter or a light probe. If you are in fact getting power to the remote terminal and to the main power terminal then check the fuse(s) and make sure the drounding terminal is secured well. If you drilled a screw into the body for the ground then you need to scrape the paint from the body where the ground lug is connected. Also could be a relay inside the amp.

Let me know if any of this helps and what you find and I will be glad to assist you further.

Posted on Jan 04, 2008

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Cant figure out clock

Hey mate,

There is a generic way of doing this for all pioneer headunits give this a go... If you turn the unit off then while it is off just hold the function button in it may just have func writtin on it then it should bring up a secondary menu with your date and time and to turn subs on or off

See how you go hope this helps


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Hello fresttadefjm,

There are no subwoofer settings on the Pioneer DEH-2800MP.

You need to check the external power amplifier and the connections from the Pioneer and from the sub(s). If everything is plugged in and wired correctly, check the amp fuses, both on-board and the main power fuse (located in the amp positive lead usually near the vehicle battery).

Hope this helps.

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How do i turn on sub mode?

For one thing I hope you know you need an amp to even power subs at all.. The remote wire coming off the rca wiring that you hook your subs up with has to go on the prong 3-in on the top here is a rough diagram: the = signs are power and ground and the prongs are thicker the comma is you remote..
- - - - - - - , - =
- - - - - - - - - =

You need a wire coming out of that slot on the wiring harness.. it should be blue. and unless you have a power antenna(comes out when you turn your radio on) then you dont need the blue/blue&white power ant. wire you can just cut it and cap it. if your amp isn't coming on when you turn your ignition to acc then your remote wire isn't properly attached..

May 15, 2008 | Pioneer DEH-P4700MP CD Player

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