[Suzi1]

Hi, am currently installing a aftermarket single din stereo into my E91 55 plate.

I have got the stalk control lead with the can-bus so all works good ( apart from PDC but I have a lead coming for that) when the car is left off for a while the memory on the stereo is wiped and it is reset to default settings. It is fine if you leave it for say 2 mins but it loses memory if left and you come back.

Don't know if maybe I have installed it and missed something? But all I have done is removed the ome stereo and installed the can-bus lead and stereo harness....

Was hoping someone could shed some light on the issue? May be a permanent has to be run?

[ctuna]

http://www.e90post.com/forums/showth...ight=head+unit

http://www.e90post.com/forums/showth...hlight=dynavin

where is W s m

[bmw325i]

It's your constant 12 volt. The easiest way to do it is to run a wire to the battery, but you could probably find a constant 12 volt in the fuse box with some effort.

[Suzi1]

Hay thanks for the replies! Well that's good I know I have to run a constant now! Hah

And I realy don't want to have the ome unit in the boot so will prob get the autoleads box.. Has anyone elce used that box? What is it like and is it worth it?

Also what elce do you benefit from having the one unit in the car? Other than the PDC..

[ctuna]

You want to at least hang on to your old unit.
Why because if you take your car in an it needs reprogramming or
has a module replaced that needs new software values the BMW diagnostic
computer at the dealership will not be able to update or repair your
car without it mounted and fucntioning.

[Suzi1]

Cool, yes a mate at work told me the same yes today so will be keeping it in my tool box .

So the contant that I run, am I right that it goes to the yellow on the stereo?

Thanks,

[ctuna]

You need to be sure that your unit documentation says 12 volt constant
for the wire you think it is.
I don't know that the color code is universal for 12 volt constant. Check the info for the particular unit you bought.
The easiest way to know for sure is to measure it with the car turned off and sleeping.

[bmw325i]

Originally Posted by Suzi1

Cool, yes a mate at work told me the same yes today so will be keeping it in my tool box .

So the contant that I run, am I right that it goes to the yellow on the stereo?

Thanks,

Yep. That should fix your problem.

[Suzi1]

Thanks! Will give it a go!

[Suzi1]

Right, after putting all my stereo in correctly I an now at a stage were I need to run the permeant live from the fuse box, I have located the fuse Box but am struggling to know which fuse is permeant live...

I have a photo of a bit of my fuse box? Don't know if it's a help..

[Suzi1]

Bump!!!!


Also I have unplugged the yellow from the harness and I have it connected direct to the spure fuse on the fuse box? (once I know what fuse it use)