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Old 03-14-2002, 06:48 PM   #1
QA Guy
Scooby Specialist
Member#: 6739
Join Date: May 2001
Location: Houston, TX
2002 WRX

Default Autometer Competition Series Thermocouple with VDO EGT gauge

Can someone verify how this connects to the back of a VDO EGT gauge?

There is a large warning that came in the Autometer package that "improper wire hook-up will destroy meter function", so I don't want to do this incorrectly. The Autometer instructions give no other information about polarity or how to hook it up, though.

There are two wires with exposed tips on the opposite side from the probe. One of the wires is red and the other is yellow.

The VDO EGT gauge instructions indicate that red is negative and goes to connector 1 and that the yellow wire is positive and goes to connector 2. These instructions are from VDO, though, not from Autometer, and I am not sure that they both use the same convention.

I have emailed Autometer about this, but have not yet received a response.

Any help is appreciated.
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Old 03-15-2002, 04:43 PM   #2
Scooby Newbie
Member#: 9973
Join Date: Sep 2001
Location: Effingham, IL
2002 WRX Sedan


Someone did posted the same question a month ago, but headed the thread "VDO EGT too slow" or something like that. He emailed me that the wires went to their respective posts and seemed to work ok. The competition Autometer probe worked faster than the VDO probe.
I have the same gauge/probe, but haven't installed yet. Found the tap at NAPA for only $4 and change.
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