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		Does anyone have a wiring diagram for one of these?  I'm a bit stumped TBH, I can only get the backlight to work, the gauge wont give a reading..
	
	
	
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		I have a HKS gauge, wiring is pretty simply, should be two spare wires with connectors on the end that you dont need / if you connect together should sweep the gauge to test...
Ill try and get down workshop later and take  a photo, dont use it anymore.
	
	
	
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		Cheers mate that'd be great if you could.  Just to check,  if I connected it up and heated the thermocouple with a cigarette lighter,  it should read shouldn't it?
	
	
	
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		Nah wouldnt be near hot enough..
Put a blowtorch near the end of it / heat gun and ull start to activate it
Takes few seconds for probe to warm up / react also
	
	
	
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		How much was it/where was it from? I'm looking to get one.
	
	
	
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		I bought a stack one after that as my HKS one was always really dodgy for some reason, think it costs about 120 iirc
	
	
	
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		Jonny did you ever sort the wiring on this?
I have a HKS gauge as well with the following wiring colours;
Yellow
Grey
White
Red
Black
Any ideas?
My thoughts would be;
Yellow - ?
Grey - ?
White - ?
Red -  Positive
Black - Negative
	
	
	
	
		
	
 
 
	
	
	
		
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		Yellow - illumination
Red - Ignition +ve
Black - Ground
White/ Grey - Join together to set the warning light level.