Fitted dab radio adapter to CDT now losing or incorrect display - Page 2

SD1too · 22nd April 2024, 16:18

Your symptoms point to a disturbed K-bus connection Glen when you inserted the new wiring behind the dash.

Here's MGMarc's method for localising K-bus faults. Alternatively a T4 session might pinpoint it.

Simon

Glen B · 22nd April 2024, 16:35

Thanks again Simon. I didn't think there would be any wires down that gap between the A post and the interior drop down fuse area but it looks like I'm wrong. It's going to be hard to see down there. Is there anyone in the forum in the north notts/north Derbys area with a T4? Obviously I expect to pay for their services.

SD1too · 22nd April 2024, 16:41

Apologies Glen, I forgot to insert the link to MGMarc's post which I have now done.

My theoretical diagnosis is based on the following:

The faults didn't exist before you installed the DAB unit.
All the faults involve equipment linked to the K-bus.
It's known that one poor K-bus connection results in odd behaviour from other equipment connected to it.
Pushing an old aerial down the back of trim without line of sight is risky!

Simon

Glen B · 22nd April 2024, 18:43

Thanks Simon.
I've messaged Big Russ to see if I can go up there on Friday so he can have a look. I think it's a bit too much for me.
Re the shoving the aerial down, I thought it was a handy empty recess to hide the cable away as much as possible as I hate seeing cables everywhere. I was just going to check to see if Russ had replied.
All this for trying to have stations with decent ( older) music!

Glen B · 23rd April 2024, 16:51

Good news!
I removed the windscreen pillar trim, undid the 4 screws at front of glovebox and pulled down the cover for the fusebox and shone a light in towards the A post area ( where the aerial emerged on Saturday with the dab aerial cable) and saw a bunch of different coloured wires and also a black connector. Although it looked in place, I decided to push it together anyway ( in the absence of any plan or knowledge) while I was leaning over from the driver's seat while doing this, I noticed the hazard lights started to click so sat up and saw the lights for them flashing. I put the ignition on and tried everything to put display on, ie, main beam, indicators, front and rear fog lights and all working properly and the door open lights go out when doors shut. Also no Err on heater whatever buttons I pressed and the rear heated window function is back. Everything that should work, does work.
Thanks for your advice and patience Simon. I need a replacement aerial for the dab adapter but will be a bit more careful threading it through the gap next time.

SD1too · 23rd April 2024, 19:36

It’s nice to have a success! Thanks for reporting back Glen.

Simon

Glen B · 24th April 2024, 16:36

It's the right thing to do in my opinion. Your name suggests you have an SD1. A C reg SD1 2000 ( with 2 litre from Princess, O series) was my second car. Had 2 new gearboxes in it. Swapped that for a 2.6 X reg auto. Then I'd bought 2 classic cars plus having a MK3 Cortina. My dad, whose drive they were on, made me get rid of a couple of them. Sorry to say the SD1 and MK1 Humber Sceptre went and I kept the Cortina and MK2 Consul. I now have 4 Rovers, 75, 45, 25, P4 110 1963.

SD1too · 25th April 2024, 07:01

I've responded by P.M. Glen.

Simon

22nd April 2024, 16:18	#11
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,412 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Your symptoms point to a disturbed K-bus connection Glen when you inserted the new wiring behind the dash. Here's MGMarc's method for localising K-bus faults. Alternatively a T4 session might pinpoint it. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 22nd April 2024 at 16:37..

22nd April 2024, 16:35	#12
Glen B Avid contributor Rover 75 Saloon Club, 2005 Rover 45, 2000 Rover 25, 1963 Rover 110 Join Date: Apr 2010 Location: Warsop Posts: 101 Thanks: 1 Thanked 3 Times in 2 Posts	Fitted dab radio adapter now losing or incorrect display Thanks again Simon. I didn't think there would be any wires down that gap between the A post and the interior drop down fuse area but it looks like I'm wrong. It's going to be hard to see down there. Is there anyone in the forum in the north notts/north Derbys area with a T4? Obviously I expect to pay for their services.

22nd April 2024, 16:41	#13
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,412 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Apologies Glen, I forgot to insert the link to MGMarc's post which I have now done. My theoretical diagnosis is based on the following: The faults didn't exist before you installed the DAB unit. All the faults involve equipment linked to the K-bus. It's known that one poor K-bus connection results in odd behaviour from other equipment connected to it. Pushing an old aerial down the back of trim without line of sight is risky! Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

23rd April 2024, 19:36	#16
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,412 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	It’s nice to have a success! Thanks for reporting back Glen. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

25th April 2024, 07:01	#18
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,412 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	I've responded by P.M. Glen. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

22nd April 2024, 18:43	#14
Glen B Avid contributor Rover 75 Saloon Club, 2005 Rover 45, 2000 Rover 25, 1963 Rover 110 Join Date: Apr 2010 Location: Warsop Posts: 101 Thanks: 1 Thanked 3 Times in 2 Posts	Thanks Simon. I've messaged Big Russ to see if I can go up there on Friday so he can have a look. I think it's a bit too much for me. Re the shoving the aerial down, I thought it was a handy empty recess to hide the cable away as much as possible as I hate seeing cables everywhere. I was just going to check to see if Russ had replied. All this for trying to have stations with decent ( older) music!

23rd April 2024, 16:51	#15
Glen B Avid contributor Rover 75 Saloon Club, 2005 Rover 45, 2000 Rover 25, 1963 Rover 110 Join Date: Apr 2010 Location: Warsop Posts: 101 Thanks: 1 Thanked 3 Times in 2 Posts	Good news! I removed the windscreen pillar trim, undid the 4 screws at front of glovebox and pulled down the cover for the fusebox and shone a light in towards the A post area ( where the aerial emerged on Saturday with the dab aerial cable) and saw a bunch of different coloured wires and also a black connector. Although it looked in place, I decided to push it together anyway ( in the absence of any plan or knowledge) while I was leaning over from the driver's seat while doing this, I noticed the hazard lights started to click so sat up and saw the lights for them flashing. I put the ignition on and tried everything to put display on, ie, main beam, indicators, front and rear fog lights and all working properly and the door open lights go out when doors shut. Also no Err on heater whatever buttons I pressed and the rear heated window function is back. Everything that should work, does work. Thanks for your advice and patience Simon. I need a replacement aerial for the dab adapter but will be a bit more careful threading it through the gap next time.

24th April 2024, 16:36	#17
Glen B Avid contributor Rover 75 Saloon Club, 2005 Rover 45, 2000 Rover 25, 1963 Rover 110 Join Date: Apr 2010 Location: Warsop Posts: 101 Thanks: 1 Thanked 3 Times in 2 Posts	It's the right thing to do in my opinion. Your name suggests you have an SD1. A C reg SD1 2000 ( with 2 litre from Princess, O series) was my second car. Had 2 new gearboxes in it. Swapped that for a 2.6 X reg auto. Then I'd bought 2 classic cars plus having a MK3 Cortina. My dad, whose drive they were on, made me get rid of a couple of them. Sorry to say the SD1 and MK1 Humber Sceptre went and I kept the Cortina and MK2 Consul. I now have 4 Rovers, 75, 45, 25, P4 110 1963.