Ice Problem

Alu_ATC · 23 Apr 2006 at 16:40

Hi all,

I posted a thread a week or two ago about getting a Pioneer DEH 3700MP head unit: Click Me

Anyway, I fitted the H/U today and I have two problems:

1. Every time I switch the car off, the H/U forgets all its settings and completely loses memory. Also, if you were on say track 4 of a cd, next time you switch the car on (and the H/U), it willl read the CD from track 1.

I think this is to do with the power supply going to the radio. I think the ACC or AAC is the wrong way round with the normal battery power supply. Pioneer does warn of this in the manual and say that these two wires should be switched around in this situation... but how?

2. I had to use an aeriel adaptor as it is a Mk3 Golf, but despite using this and it all being connected correctly, I'm getting barely any reception. Radio stations can be heard very faintly, but nothing changes if you touch or extend the aeriel. The aeriel is not the stock VW one, it is a replacement, is this the problem?

Finally, the H/U is in the car now and I have left it how it is. I dont want any damage to be done to the vehicles electrics if the wiring for the power supply is the wrong way round, so fixing this ASAP would be good. Other than this, it does sound very good

Any help very much appreciated!

PAz · 23 Apr 2006 at 16:42

1. Swap the yellow and red cables around on the ISO connector

paradigm · 23 Apr 2006 at 16:42

PAz said:
1. Swap the yellow and red cables around on the ISO connector

Spot on

You have your constant and switched lives the wrong way around.

Alu_ATC · 23 Apr 2006 at 16:45

Thanks guys for the two replies, but can i ask how??? I thought the cables being the wrong way round were the problem, but how do I switch them - do I need to just pull the red and yellow wire out of the black plastic block and then switch them the other way round, or is cutting wire involved?

PMKeates · 23 Apr 2006 at 16:46

If your wiring harness allows you to simply remove cables, then just swap them over. If, however, it doesn't, then a little bit of cutting is in order.

Simian · 23 Apr 2006 at 16:47

paradigm said:
Spot on You have your constant and switched lives the wrong way around.

Yep its a Bullit connector 2x wires one Yellow one Red... just swap em arround from where thay are now!...

as for the aerial make sure its all the way in!... I was driving arround for a few weeks complaining that I was getting a crap signal till I investigated further and pished the connector in a bit harder (not too hard!!!), now the reception very rarely (only when I drive past a very big Army antenna) goes off!!..

Alu_ATC · 23 Apr 2006 at 16:51

PMKeates said:
If your wiring harness allows you to simply remove cables, then just swap them over. If, however, it doesn't, then a little bit of cutting is in order.

Ok, so just have a tug at the harness and see if the wire comes out - if not, would I be better off taking it to a garage?

The thing that confuses me is that Pioneer's instalation manual shows a diagram of the wires being switched round, but not at the black plastic part of the harness, but as if the wires interconnect. I hope this makes some sense.

Simian · 23 Apr 2006 at 19:33

Alu_ATC said:
Ok, so just have a tug at the harness and see if the wire comes out - if not, would I be better off taking it to a garage?

The thing that confuses me is that Pioneer's instalation manual shows a diagram of the wires being switched round, but not at the black plastic part of the harness, but as if the wires interconnect. I hope this makes some sense.

You should see on Pioneers side of the wiring two wires seperate from the ISO connectors (one yellow, one red) connected with 'Bullet' connectors!... just swap these round!

If their not there don't cut wires willy nilly.. take it to a Sextons (or similar) or even (god forbid) Halfords.

Hope that helped

Smiley Man · 23 Apr 2006 at 20:35

i have the same problem

in 1 fuse slot it forgets its settings, in the other it cuts out with the sightest bit of bass!

so all i need to do is swap the yellow and red round on the connector at the back?

Alu_ATC · 23 Apr 2006 at 23:00

Thanks for all the advise, Ill have a bash at both tommorrow if I have time, leaving the wires the wrong way round temporarily won't cause damage though, will it?

agw_01 · 23 Apr 2006 at 23:07

Nope, you won't do any damage

I've never known of anyone having problems with this.

Basically, if the HU is switching off with the ignition it isn't going to be draining power at all.

cymatty · 23 Apr 2006 at 23:09

agw_01 said:
Nope, you won't do any damage

I've never known of anyone having problems with this.

.

Alu_ATC · 23 Apr 2006 at 23:16

agw_01 said:
Nope, you won't do any damage

I've never known of anyone having problems with this.

Basically, if the HU is switching off with the ignition it isn't going to be draining power at all.

Good to know - thats exactly what I thought as its basically dead being wired incorrectly.

And cymatty...