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DISCO3.CO.UK > Technical (D3)

Webasto Cable

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Chris532

Member Since: 16 Sep 2014
Location: Northeast
Posts: 111

2005 Discovery 3 TDV6 Base 7 Seat Auto Unknown Colour

Webasto Cable

Can one make a diagnostic cable to use with the free Webasto software out of a VGA cable and a couple of crocodile clips

6th Dec 2014 4:02 pm

Martin
Site Admin and Owner

Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18552

2006 Discovery 3 TDV6 SE Manual Buckingham Blue

Where would you be plugging the VGA cable? 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!

6th Dec 2014 4:48 pm

Chris532

Member Since: 16 Sep 2014
Location: Northeast
Posts: 111

Id plug one end into the VGA port on my computer and then then the idea would be to cut the other end off and then try to find where to splice it into the FBH to use the free software.

I have seen it done with the OBDII connectors using three wires one to the battery live one to the ground and another the the red wire on the FBH.

6th Dec 2014 4:53 pm

Martin
Site Admin and Owner

Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18552

The VGA port will be no good to you as it's for video/display. 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!

6th Dec 2014 4:54 pm

Chris532

Member Since: 16 Sep 2014
Location: Northeast
Posts: 111

I see so there is no way it would communicate through the VGA with the program.

I also have the mongoose OBDII cable with the USB one end I'm having no luck with that to. I have connected it using three of the pins in the digram from here

Click image to enlarge

Am I correct in thinking there is 16 brown wire on here to battery live then black bottom left to earth then the red cable is spliced into the red cable on my FBH or is this far to straight forward and wishful thinking

6th Dec 2014 5:28 pm

Martin
Site Admin and Owner

Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18552

Try pin 4 or 5 to earth (or both), some adapters are wired up slightly differently internally.

Have you seen www.disco3.co.uk/fbh ? 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!

6th Dec 2014 5:35 pm

Chris532

Member Since: 16 Sep 2014
Location: Northeast
Posts: 111

Thanks Martin, ill try swapping the pins on the earth round and see if i have any luck the only com port the program is letting me select is 3 so not sure if this is correct to ill play around with it some more.

Thanks for that link it suggest I'm doing every thing correct but will try shifting the earth to see what happens

6th Dec 2014 5:42 pm

DiscoJake

Member Since: 23 Aug 2013
Location: Hereford
Posts: 1429

2009 Discovery 3 TDV6 HSE Auto Stornoway Grey

Like Martin says try pin 4 for negative. I struggled for ages with pin 5 and then found a post suggesting 4 and it worked instantly.

Presume you have driver for obd installed and windows recognises the cable?

6th Dec 2014 6:07 pm

Chris532

Member Since: 16 Sep 2014
Location: Northeast
Posts: 111

Hi Jake i think you could be on to a winner with the driver I'm getting the dull dong sound when i plug it in so i don't think windows is recognising my cable

Now ill have to try and locate a driver

6th Dec 2014 6:10 pm

DiscoJake

Member Since: 23 Aug 2013
Location: Hereford
Posts: 1429

Good luck. That was my first struggle before the pins.

Windows 7 installed driver automatically but my old Xp laptop didn't want to know

6th Dec 2014 6:15 pm

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