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Heated seats switch mod

Posted: 06 Nov 2014, 14:10
by danmetallic
Anyone got a good link to thermometers, voltage or any other display that will fit where the heated seats switch goes.

Measures 40mm x 25mm

Been searching for ages and can't find anything close.

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Re: Heated seats switch mod

Posted: 06 Nov 2014, 21:00
by danmetallic
Actually a small gps mph digital speedometer would be perfect.

Re: Heated seats switch mod

Posted: 06 Nov 2014, 21:02
by danmetallic
Have now ordered a thermometer and voltmeter the right size. But really want to try and mod a speedometer now.

Re: Heated seats switch mod

Posted: 08 Nov 2014, 09:22
by CovKid
Better off buying a gps HUD speedometer. No need to even take your eyes off the road then.

Re: Heated seats switch mod

Posted: 08 Nov 2014, 09:59
by danmetallic
CovKid wrote:Better off buying a gps HUD speedometer. No need to even take your eyes off the road then.

V true. That's what I've ended up thinking. There must be something else other that temp or voltmeter that could go in there.

Re: Heated seats switch mod

Posted: 08 Nov 2014, 10:09
by what2do
Ooh, interesting. Is there a digital rev counter that would fit the bill? Now that would appeal to me.

Re: Heated seats switch mod

Posted: 08 Nov 2014, 15:59
by CJH
danmetallic wrote:Have now ordered a thermometer and voltmeter the right size. But really want to try and mod a speedometer now.

Have you got a link to the one you ordered?

Re: Heated seats switch mod

Posted: 08 Nov 2014, 18:47
by danmetallic
CJH wrote:
danmetallic wrote:Have now ordered a thermometer and voltmeter the right size. But really want to try and mod a speedometer now.

Have you got a link to the one you ordered?

To be honest I've ordered a few from different people as they were so cheap. All of them will need a few mm filing off to make them fit i think.

Ended up getting these:
http://www.ebay.co.uk/itm/281205761920? ... EBIDX%3AIT" onclick="window.open(this.href);return false;
http://www.ebay.co.uk/itm/281083965381? ... EBIDX%3AIT" onclick="window.open(this.href);return false;

Still quite like the idea of a mph display in there like this...
Image

Or a digital compass maybe.

Re: Heated seats switch mod

Posted: 08 Nov 2014, 19:08
by CJH
Thanks. I quite like the idea of a digital tacho myself, as my speedo is fairly accurate (provided I take the mid point of the bouncing needle!). Been browsing ebay for ages - plenty available for a 68mmx33mm cut-out, but I didn't see any for a 40mm x 25mm cut-out. There are some that are mounted in a bigger package that I might be able to open up and remove the display from.

Re: Heated seats switch mod

Posted: 08 Nov 2014, 19:17
by danmetallic
There's some nice solutions here:
http://www.thesamba.com/vw/forum/viewto ... sc&start=0" onclick="window.open(this.href);return false;

Re: Heated seats switch mod

Posted: 19 Nov 2014, 21:24
by CJH
I may have found a suitable digital tacho - 40.5mm x 24mm bezel, so pretty close.

Does anybody know what the green 'Signal Input' wire would need to connect to on a petrol engine? Would I need to fit a Hall effect sensor somewhere and/or run a wire from the engine bay, or will something behind the dash carry a suitable signal?

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*E D I T - I've just found this wiring schematic. Where can I get a 3-5V pulse to feed this tacho? (E D I T again - mine's the early dash without a tacho, in case that's relevant, but of course you knew that, since I'm trying to add a digital tacho :roll: )
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Re: Heated seats switch mod

Posted: 19 Nov 2014, 21:32
by lloydy
if yours is a later van, the wires that work the factory tacho are there already. On a diesel it comes from the alternator, on a petrol van i think it comes from the coil?..

Re: Heated seats switch mod

Posted: 19 Nov 2014, 21:34
by danmetallic
Nice find! I'm afraid I can't help you with any of your questions though. Someone will be along.

Here is my temp gauge fitted btw.

Image

Re: Heated seats switch mod

Posted: 19 Nov 2014, 22:43
by CJH
lloydy wrote:if yours is a later van, the wires that work the factory tacho are there already. On a diesel it comes from the alternator, on a petrol van i think it comes from the coil?..

Mine's the earlier dash. I'm sure the info is in a Haynes or Bentley wiring diagram though.

danmetallic wrote:Nice find! I'm afraid I can't help you with any of your questions though. Someone will be along.

Here is my temp gauge fitted btw.

Image

Looks smart. Your LCD meter is better in that location - I suspect the LED might be a bit dazzling at night, so maybe I'll put it on a switch.

Re: Heated seats switch mod

Posted: 19 Nov 2014, 23:12
by CJH
CJH wrote: Mine's the earlier dash. I'm sure the info is in a Haynes or Bentley wiring diagram though.

As far as I can tell, pin 1 (green) from the coil becomes pin 9 (green) on the 14-pin dash connector. I'll have to have a poke about. It'll be a pleasant surprise if it's there and on that pin - from memory my alternator feed (for the split charge relay trigger) wasn't on the same pin that's described in the wiki (pin 11?), so maybe my 1983 van has a different dashboard connector layout from the later vans.