Old-school Hks Gauge Help!

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Jan 19, 2004 | 04:38 PM

#21

Rob x-7

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Joined: Feb 2002

Posts: 12,288

From: Amityville, New York

it still needs to somehow get the reading from the engine, either

its a vacuum hose, or a electrical sender, otherwise how would the

gauge work.

Jan 19, 2004 | 04:38 PM

#22

RONIN FC

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Joined: Oct 2003

Posts: 1,420

From: Boston Ma.

Quote:

Originally Posted by wan' date='Jan 19 2004, 02:36 PM

I guess the sender gets its power from the gauge's power supply since the sender plugs in directly to the back of the gauge.

So the sender plugs in separate from those 4 wires? do you have a pic

Jan 19, 2004 | 04:40 PM

#23

gazellis

Senior Member

Joined: Feb 2003

Posts: 421

From: Fort Worth, Texas

Quote:

Found a PDF containing this info!!!

BLACK: GROUND

RED: 12v Ignition Power Source

Orange: Constant 12v power

Yellow: Illumination Source (parking lamps)

Thanks for helping out. Really appreciate it

What they are driving at is that according to the wiring setup listed above, there are no wires connected to a sending unit so how is the gauge getting its information? Where is it reading the boost from...according to this?

Jan 19, 2004 | 04:41 PM

#24

wan

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Joined: Sep 2002

Posts: 55

Quote:

Originally Posted by RONIN FC' date='Jan 19 2004, 02:36 PM

Does the wiring have any stripes? I suspect you need a sender.

I have everything except for the actual instructions from HKS. I have two of these gauges, one is brand new with everything but the box unopened and a used one. Both are missing instructions which sucked until now.

Jan 19, 2004 | 04:45 PM

#25

RONIN FC

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Posts: 1,420

From: Boston Ma.

One of the wires must be for a grounded sender, like an oil sender.

Jan 19, 2004 | 04:53 PM

#26

j9fd3s

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Joined: May 2002

Posts: 22,465

From: California

Quote:

Originally Posted by Rob x-7' date='Jan 19 2004, 02:33 PM

i cant see why a gauge would possibly need constant power either?

i dunno either but my greddy would flip out without it

Jan 19, 2004 | 05:18 PM

#27

Cheers!

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Joined: Nov 2002

Posts: 3,108

ya greddy electronics have constant 12V, not sure why. Rob, i think the HKS has two harness, one for power, and another that goes to sender unit in car.

Jan 19, 2004 | 05:22 PM

#28

Rob x-7

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Posts: 12,288

From: Amityville, New York

if it has peak/hold I can see it needing it for that

Jan 20, 2004 | 01:44 AM

#29

wan

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Joined: Sep 2002

Posts: 55

Quote:

Originally Posted by Cheers!' date='Jan 19 2004, 03:18 PM

ya greddy electronics have constant 12V, not sure why. Rob, i think the HKS has two harness, one for power, and another that goes to sender unit in car.

correct. The sending unit connects to the back of the gauge using its own harness. The gauge itself has another harness for power. The sending unit gets its power from the gauge. Something like this...

--POWER--> [GAUGE]--POWER-->(SENDING UNIT)

Nov 7, 2005 | 04:55 PM

#30

Alonso

Junior Member

Joined: Nov 2005

Posts: 1

Hi there

Thanks a lot for that information. I was searching for hours.. Can you forward me the pdf? I've got the following EGT-gauge:

The wiring for the power and the sensor is allright now. But there are any other wires (blue and so on). I think they must be the output for the warn, or what do you think?