Wiring Guage help

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crazymilk
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Wiring Guage help

Post by crazymilk »

Hi there
I have just installed a new Prosport 52mm Tacho and Oil Pressure gauge in to my VW T25 1.9DG tintop and all wired in and working fine.

However, currently I have them wired up so the illumination is white all the time.
I understand that they are able to also illuminate blue when you say turn the headlights on.
I am assuming this is done by wiring it up the light switch on the dash however I am unsure what terminal I should wiring in to to make this happen.


I had an email from their support asking if this was possible, reading:
$_57.JPG
Correct, if you wire the other wire to a headlight switched power, it will change to blue when the headlights are turned on - I just need to know which terminal on the light switch to wire into.

Any help would be great, here is a picture of the terminals on rthe back of the light switch.
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1985 VW T25 EJ25 SOHC Hydro Bus

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marlinowner
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Re: Wiring Guage help

Post by marlinowner »

Pin 58 to connect to sidelight circuit, or pin 56 (large spade in corner of switch) to connect to headlight circuit.
1993 SA VW T25/T3 2.5i Microbus/homebrew camper
1981/1968 Marlin Kitcar TR6 Engine

crazymilk
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Location: Suffolk

Re: Wiring Guage help

Post by crazymilk »

Thank you very much

So if I connect to pin 58 will it change to blue illumination when side lights are on but revert to white again when in main headlights?

If this is the case I assume I can wire to both pin 58 and 56 so the gauges turn blue if either sides or full headlight are turned on?
http://www.justgermancrew.com Come and join the FUN!
1985 VW T25 EJ25 SOHC Hydro Bus

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marlinowner
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Re: Wiring Guage help

Post by marlinowner »

No sidelights stay on with headlights so dials will stay blue. If you wired to both you would be shorting pins 56 and 58 together, not a good thing.
1993 SA VW T25/T3 2.5i Microbus/homebrew camper
1981/1968 Marlin Kitcar TR6 Engine

crazymilk
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Location: Suffolk

Re: Wiring Guage help

Post by crazymilk »

Great - thought that while I was typing

Thanks again for your help - pin 58 it is.
http://www.justgermancrew.com Come and join the FUN!
1985 VW T25 EJ25 SOHC Hydro Bus

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