2000 GT Instrument Cluster swap - MustangForums.com


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Old 11-03-2011, 05:55 AM   #1
nikstang
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Default 2000 GT Instrument Cluster swap

I have a 2000 GT cluster and want to upgrade my 94 with it. I need the wiring diagrams for the both of them. I figure it should be pretty strait forward from there.
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Old 11-03-2011, 04:59 PM   #2
cliffyk
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It won't be an easy swap as you will need to upgrade the PCM from EEC-IV to EEC-V to drive the speedometer, tachometer, coolant temp, MIL, and a few other warning lights.

Here is the 1994 cluster wiring diagram:



Note that only the MIL, the auto-tranny O/D lamps and the tach are controlled by the PCM--and all directly controlled at that.


Here is the 2000 cluster wiring diagram.



On the 2000 the speedometer, tach, ECT, MIL, O/D indicator and other function are provided as digital data over the Multiplex Communication Network. In later models this became called thethe SCP (Standard Corporate Protocol) bus--and is in fact the OBD2 data bus.

A microprocessor in the cluster reads the digital data and then drives the gauges, all of which are just identical servo motors; not "real" gauges at all. Here's a shot of the backside of an '01 cluster with the electronics removed.

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Old 11-03-2011, 05:14 PM   #3
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You said that so gentle; like you didn't know it was going to ruin his day, lol.
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Old 11-03-2011, 05:35 PM   #4
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Not a bad thing at all just something else to make me find a 1995 Bronco or F-150 with a 302 to grab its wiring harnesses and PCM. They are EEC-V and OBD-II and that should do the trick.
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Old 01-11-2014, 07:51 PM   #5
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Default shorting out

WHAT can cause a cluster to stop working after 10 or 15 miles ?? Loss of ground ? How do you track that down ?


Seems to just be the fuel, tack and speed guages shorting out.
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2000, 2004, 94, backside, cluster, control, diagram, gauge, mustang, protocol, scp, simple, speedometer, tach, wiring

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