Author |
Message |
TC/TeamEvil Samba Member
Joined: February 16, 2004 Posts: 1769
|
Posted: Thu Dec 17, 2020 3:47 pm Post subject: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
I'm installing a VDO head temp gauge and picking up one of those thermal coupler "senders" that fit under the spark plug. Has anyone done this sort of thing before? If you have, what color wires on the sender go to which spades on the back of the gauge, there are two wires and two spades on the back of the gauge, GOTTA be an simple answer out there.?
I've looked online and asked on other forums here but never managed to get a simple answer ! The gauge has two spades, the sender has two wires, what goes where?
Thank you ! |
|
Back to top |
|
|
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Thu Dec 17, 2020 3:50 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
is it a VDO sender kit, and a 0 - 600 F cockpit style gauge? _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
ToolBox Samba Member
Joined: January 27, 2004 Posts: 3439 Location: Detroit, where they don't jack parts off my ride in the parking lot of the 7-11
|
Posted: Fri Dec 18, 2020 10:27 am Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
The TC Type designatation needs to match the Gauge Type designatation. You can't mix and match Types... |
|
Back to top |
|
|
Wildthings Samba Member
Joined: March 13, 2005 Posts: 50255
|
Posted: Fri Dec 18, 2020 12:29 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
You have a 50-50 chance of getting the connections right and it will not hurt to hook them up backwards. |
|
Back to top |
|
|
aeromech Samba Member
Joined: January 24, 2006 Posts: 16922 Location: San Diego, California
|
Posted: Fri Dec 18, 2020 12:39 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
I believe the wires between the sender and gauge are special. You can’t use ordinary wire _________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
|
Back to top |
|
|
ratwell Samba Member
Joined: April 26, 2003 Posts: 8717 Location: Victoria, BC
|
|
Back to top |
|
|
Wildthings Samba Member
Joined: March 13, 2005 Posts: 50255
|
Posted: Fri Dec 18, 2020 3:45 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
As per the reason I said for him to just hook it up. 50-50 chance it will work correctly and if not just swap the wires and try again. What is important is that the polarity of the wires at the junction near the sender is correct. |
|
Back to top |
|
|
SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
|
Posted: Fri Dec 18, 2020 5:01 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
Wildthings wrote: |
As per the reason I said for him to just hook it up. 50-50 chance it will work correctly and if not just swap the wires and try again. What is important is that the polarity of the wires at the junction near the sender is correct. |
not only that but for a while VDO was accidentally wiring them backwards so they had to be reversed anyway. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
Back to top |
|
|
TC/TeamEvil Samba Member
Joined: February 16, 2004 Posts: 1769
|
Posted: Sat Dec 19, 2020 2:01 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
Ratwell—
I found that diagram on-line BUT there is no indication of the color of the wires attached to the sender? Useless—
Anyone got a diagram with the colors indicated or better yet anyone actually connected a VDO head temp gauge to a VDO head temp sensor ? ! ? !
Thanks!
I honestly just can't believe that this is such a difficult question, somebody here MUST have a head temp gage in their ride ! ! I've asked this same question on almost every forum here and so far, NOTHING useful . . . |
|
Back to top |
|
|
MorkC68 Samba Member
Joined: December 23, 2015 Posts: 610 Location: Nottingham, England
|
Posted: Sat Dec 19, 2020 2:29 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
What colour wire have you got coming from your gauge and, also what colour wires have you got in your compensating cable?
https://www.thermometricscorp.com/thermocouple-wire.html
The link above will help, I hope.
On a thermocouple you mostly have N, K or J type and each has different types of wire in the positive and negative (detailed above). You must match the correct compensating cable with the thermocouple and its readout else you will get incorrect readings, for example you cannot have a K type t/c with N type compensating cable matched to, say a readout for J type.
The must match all through.
Part of my role at work is fatigue testing metallic materials at temperature and we have to adhere to the correct configuration of temperature readouts else we get incorrect measurements. _________________ Major; 1977 Westfalia Campmobile
- Subaru EJ20
- Koni Classic adjustable dampers & Empi Heavy Duty Anti Roll Bar
- 180W Solar System
My blog: https://twolatebays.wordpress.com/ |
|
Back to top |
|
|
Wildthings Samba Member
Joined: March 13, 2005 Posts: 50255
|
Posted: Sat Dec 19, 2020 2:35 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
TC/TeamEvil wrote: |
R
I honestly just can't believe that this is such a difficult question, somebody here MUST have a head temp gage in their ride ! ! I've asked this same question on almost every forum here and so far, NOTHING useful . . . |
50-50 chance of getting it right the first time and two minutes to swap the wires if you get it wrong. Don't make a mountain out of a mole hill. |
|
Back to top |
|
|
skills@eurocarsplus Samba Peckerhead
Joined: January 01, 2007 Posts: 16802 Location: sticksville, ct.
|
Posted: Sat Dec 19, 2020 3:08 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
why not just call vdo and ask them?
http://www.usa.vdo.com/meta-navigation/contact/ _________________
gprudenciop wrote: |
my reason for switching to subaru is my german car was turning chinese so i said fuck it and went japanese....... |
Jake Raby wrote: |
Thanks for the correction. I used to be a nice guy, then I ruined it by exposing myself to the public. |
Brian wrote: |
Also the fact that people are agreeing with Skills, it's a turn of events for samba history |
|
|
Back to top |
|
|
ratwell Samba Member
Joined: April 26, 2003 Posts: 8717 Location: Victoria, BC
|
Posted: Sat Dec 19, 2020 6:36 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
TC/TeamEvil wrote: |
I found that diagram on-line BUT there is no indication of the color of the wires attached to the sender? Useless— |
Probably because the connector was keyed.
All the K-Type thermocouple wires I've purchased (Fry's, Omega.com) has been red/yellow like the charts:
Yet what you have may not look like this which would indicate the polarity of the wiring.
or this:
Can you post a photo of what you have? _________________ '78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ |
|
Back to top |
|
|
ratwell Samba Member
Joined: April 26, 2003 Posts: 8717 Location: Victoria, BC
|
Posted: Sat Dec 19, 2020 8:42 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
I never thought of grinding the case away like this:
Link
It's why we use NGK plugs with a ring terminal replacing the captured gasket. _________________ '78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ |
|
Back to top |
|
|
TC/TeamEvil Samba Member
Joined: February 16, 2004 Posts: 1769
|
Posted: Sun Dec 20, 2020 12:46 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
Thanks all for the info and such. I'm gonna take a stab at it once the cold abates a bit. We got hit here in the North East pretty hard . . . |
|
Back to top |
|
|
TC/TeamEvil Samba Member
Joined: February 16, 2004 Posts: 1769
|
Posted: Sun Dec 20, 2020 12:50 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
"50-50 chance of getting it right the first time and two minutes to swap the wires if you get it wrong. Don't make a mountain out of a mole hill."
But I ALWAYS do, you know? Shoot myself in the foot every time. Ask my wife what it like to live with me . . . ?
Possibly hooking up the wires wrong the first time around doesn't kill the gauge? If not, thanks for letting me know, sounds like the easy way out ! |
|
Back to top |
|
|
Wildthings Samba Member
Joined: March 13, 2005 Posts: 50255
|
Posted: Sun Dec 20, 2020 1:16 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
TC/TeamEvil wrote: |
"50-50 chance of getting it right the first time and two minutes to swap the wires if you get it wrong. Don't make a mountain out of a mole hill."
But I ALWAYS do, you know? Shoot myself in the foot every time. Ask my wife what it like to live with me . . . ?
Possibly hooking up the wires wrong the first time around doesn't kill the gauge? If not, thanks for letting me know, sounds like the easy way out ! |
The voltages are very low so not much energy there to hurt something. I have hooked mine up wrong as the wires weren't marked and it didn't hurt a thing and I have fixed other peoples setup that were wired backwards. |
|
Back to top |
|
|
ratwell Samba Member
Joined: April 26, 2003 Posts: 8717 Location: Victoria, BC
|
Posted: Sun Dec 20, 2020 1:34 pm Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
The output voltage of the thermocouple is in mV so if you have a multi-meter that can display mV you can figure out which wire connected to the meter's +ve lead produces a positive voltage.
Test: hold the junction between your fingers which will heat it up. If the voltage increases on your meter, then you've got the polarity correct.
K-Type thermocouple reads 0mV @ 20ºC:
https://assets.omega.com/pdf/tables_and_graphs/thermocouple-type-k-celsius.pdf _________________ '78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ |
|
Back to top |
|
|
NASkeet Samba Member
Joined: April 29, 2006 Posts: 2947 Location: South Benfleet, Essex, UK
|
Posted: Fri Dec 25, 2020 8:49 am Post subject: Re: How to connect a VDO head temp gauge to a VDO head temp sender? |
|
|
There is a wiring diagram in the following 1992 VDO catalogue:
https://www.thesamba.com/vw/archives/lit/1992_vdo_catalog.php
Here is another which came with my 50~300 degC VDO Cockpit gauge kit
_________________ Regards.
Nigel A. Skeet
Independent tutor (semi-retired) of mathematics, physics, technology & engineering for secondary, tertiary, further & higher education.
Much modified, RHD 1973 VW "1600" Type 2 Westfalia Continental campervan, with the World's only decent, cross-over-arm, SWF pantograph rear-window wiper
Onetime member, plus former Technical Editor & Editor of Transporter Talk magazine
Volkswagen Type 2 Owners' Club (Great Britain)
http://www.vwt2oc.net |
|
Back to top |
|
|
|