Alpine CDE 9845 ---> Pioneer DEH-P3900MP

Have you checked the subs? And tested the RCA cables?

Setting Time

1 In the Clock priority mode, press and hold

TITLE for at least 2 seconds while the time is

displayed.

The time indication will blink.

2 Turn the Rotary encoder (CDE-9845/CDE-9843

only) or press 4 and 3 (CDE-9841 only) to adjust

the hours while the time indication is blinking.

3 When the hour has been adjusted, press the

Rotary encoder (CDE-9845/CDE-9843 only) or

press MODE (CDE-9841 only).

4 Turn the Rotary encoder (CDE-9845/CDE-9843

only) or press 4 and 3 (CDE-9841 only) to adjust

the minutes while the time indication is blinking.

The time is automatically set 5 seconds after the minute

adjustment. The time can also be manually set by

pressing the Rotary encoder (CDE-9845/CDE-9843 only)

or press MODE (CDE-9841 only).

• To synchronize the clock to another clock/watch or radio time

announcement, press and hold the Rotary encoder (CDE-9845/

CDE-9843 only) or press and hold MODE (CDE-9841 only) for at

least 2 seconds after setting the "hour." Minutes will reset to 00. If

the display shows over "30" minutes when you do this, the time
will advance one hour.

Or you can ge tthe manual on the link below.

http://a248.e.akamai.net/pix.crutchfield.com/Manuals/500/500CDE9843.PDF

next time by the wire harness that plugs it into the factory wire plugs never cut the factory plugs off you have wired something wrong you may damage something or start your truck on fire.

Press the Rotary encoder (CDE-9845/CDE-9843
only) or press MODE (CDE-9841 only) repeatedly
to choose the desired mode.
Each press changes the modes as follows:
BASS → TREBLE → SUBWOOFER* → BALANCE → FADER
→ DEFEAT → VOLUME → BASS
BASS: -7 ~ +10
TREBLE: -7 ~ +7
Subwoofer : 0 ~ +15
Balance : L15 ~ R15
Fader : R15 ~ F15
Defeat : ON/OFF
Volume : 0 ~ 35

You can download a manual from here http://www.devicemanuals.com/guide/Car%20Audio/Alpine/Alpine-CDE-9845-43-41-Owner%27s-Manual-English-TmpneU9UYz.html

look at the back have an aux input if not you have to get a fm modulator and let some one put in for you

Page 16 of the manual:
http://vault.alpine-usa.com/products/documents/CDE-9841,%2043,%2045%20OM.PDF

Setting Time
1 In the Clock priority mode, press and hold
TITLE for at least 2 seconds while the time is
displayed.
The time indication will blink.
2 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the hours while the time indication is blinking.
3 When the hour has been adjusted, press the
Rotary encoder (CDE-9845/CDE-9843 only) or
press MODE (CDE-9841 only).
4 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the minutes while the time indication is blinking.
The time is automatically set 5 seconds after the minute
adjustment. The time can also be manually set by
pressing the Rotary encoder (CDE-9845/CDE-9843 only)
or press MODE (CDE-9841 only).
• To synchronize the clock to another clock/watch or radio time
announcement, press and hold the Rotary encoder (CDE-9845/
CDE-9843 only) or press and hold MODE (CDE-9841 only) for at
least 2 seconds after setting the “hour.” Minutes will reset to 00. If
the display shows over “30” minutes when you do this, the time
will advance one hour.

Well first you will have to get the fit kit for your car to prevent the radio from being stolen, and make it fit right. you can get this part at Best Buy, Circut City, or even sometimes at walmart. also you will need to get the proper wiring harness. all you have to do is go to an audio place and ask them for the proper parts for your car and they will get them for you. After you have everything that they say you need all of the wires match up colors. extra wires you will have is the remote wire witch is blue w/white stripe. and an orange one (illumines) witch if isnt on the wiring harness for your car its fine. all the ill. wire does is dim the radio when you dim your other componets in your car.

here is the users manual;

http://vault.alpine-usa.com/products/documents/CDE-9841,%2043,%2045%20OM.PDF


Answer is on page 15.



Best of Luck.

The only way to know for sure is to see if it has voltage getting to it. You need a Voltage tester (DMM, testlight, etc...). There should be 12 volts on the yellow always and on the red wire when the Ignition/Accessory is on. If both are present then the radio probably got surged and will have to be replaced/repaired.