Take the 2-minute tour ×
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.

I have put in an aftermarket stereo into my car. (Pioneer DEH-4500BT).

I hooked it all up ok and it was all working. However i noticed that it did not turn off with the engine.

Before i had brought it i had read up about changing stereos so i knew what this was.

I got a friend of mine to wire the Cigarette lighter to the "Switched 12v".

Now it turns on and off with the car.

However, when i turn off the car and leave it for about 30 minutes, the radio stations that i have saved disappear.

Is there any way to fix this?

The car is a Citroen C3 - 1.1i Petrol - 2004 (04).

PS. My friend is a Car Electrical Specialist, but has gone on holiday for a month today!! He also checked correctly which one was permanent live and which was switched live.

share|improve this question
add comment

2 Answers

You need to make sure that the head-unit is hooked up to constant power (usually the yellow wire on the harness). Make sure that it isn't hooked to a circuit that goes off after half an hour or when you open the door.

share|improve this answer
    
Exactly, you need to get a constant power to keep the memory between each shutdown/start-up. The constant power wire will draw really few amps that will not drain your battery. –  Gabriel Mongeon Jul 29 '13 at 18:30
    
Some cars don't have a "constant power wire in the audio system loom. I had the same thing with my Opel Corsa. The guys who installed the system had to run a new wire from somewhere. –  Juann Strauss Jul 30 '13 at 7:47
    
It is all wired correctly. The constant and the switched were both tested with a volt meter to check which ones were which –  Dr.Pepper Jul 30 '13 at 9:52
1  
@Dr.Pepper chances are that the constant power isn't actually a constant power. Maybe a 30 minute power. Where are you getting the lead from a random loom or fuse box? –  Mike Saull Jul 30 '13 at 13:21
    
hi mate, the switched 12v is coming from the cigarrette lighter and the constant is coming from the original loom with a harness on the end which came with radio –  Dr.Pepper Jul 30 '13 at 19:17
show 4 more comments

From the manual:

http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/DEH-X6500BT_OwnersManual112712.pdf

http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/DEH-X6500BT_OwnersManual112712.pdf

Black to Ground

Yellow to "always on" (battery, fuse protected) {saves memory}

Red to ignition

Blue/White to external amplifier (or insulated)

Orange (optional) to park lights

share|improve this answer
    
It is all wired correctly. The constant and the switched were both tested with a volt meter to check which ones were which –  Dr.Pepper Jul 30 '13 at 9:51
    
If, after half an hour or so, the yellow wire is still at 12V (or better) and the radio ground is solidly connected, I'd suspect a faulty radio. Let us know!! :) –  JoeFromOzarks Jul 30 '13 at 16:05
    
im gonna get the volt meter out and have a check i think at some point lol –  Dr.Pepper Jul 30 '13 at 19:18
    
I'd be grabbing the voltmeter about the second or third time I had to reprogram in the stations!!! (grin) –  JoeFromOzarks Jul 30 '13 at 21:17
    
Had a go at it with the multimeter. The constant live seems to turn off after about 5 minutes for some reason. Any ideas why that might be? –  Dr.Pepper Jul 31 '13 at 22:54
show 3 more comments

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.