On a 1995 Mustang GT the entire gauge cluster and clock have stopped working. There are NO readings on any of my factory gauges. The clock screen stays black.
This is what I know...
The illumination bulbs in the cluster light up, the indicators for blinkers, flashers, and hi beams work.
The speedo, tach, oil, battery, temp, and fuel gauges show no reading.
I took out the cluster and replaced the circuit board in the small slot on the back... no change. I also replaced the cluster with a used cluster (presumed good)... no change.
There are 2 plug ins on the back of the cluster. One is black and one is white.
Looking at the black on in the direction it plugs into the cluster is has a total of 16 pins from 1 to 9 with a small space and the remaining 7.
As in 1 2 3 4 5 6 7 8 9 - 10 11 12 13 14 15 16
The white plug (also facing in the direction it plugs into the cluster) also has 16 pins from 1 to 7 with a small space and the remaining 9.
As in 1 2 3 4 5 6 7 - 8 9 10 11 12 13 14 15 16
I checked for 12V reading on each pin of the BLACK harness... it shows power on both pins #6 and 13 with the key on and car running. No other 12V power.
With the the headlights on and the HI-BEAMS turned on those 2 terminals retain power and the #15 pin then gives a 12V reading.
On the WHITE harness... There are NO pins providing a 12V power feed with the key on and the car running. If I turn the FLASHERS on the #1 pin flashes a 12V reading. With the headlights turned on the #11 pin gives a 12V reading.
On the clock, there are 8 total pins. TWO pins with wires on the top 4 slots and THREE pins with wires on the bottom 4 slots:
Note: Terminal slots 3,4, and 5 are empty.
As in:
1234
5678
With the key on and car running #2 and #7 pins give a 12V reading. With the headlights on they retain a reading and the #1 and #8 pin also give a 12V feed.
Pin #6 never gives a 12V reading under any conditions.
I am presuming that there is a module in the car that sends gauge information to the cluster (???). If so, where might it be located, and can it be tested?
PM me or email at [email protected]
This is what I know...
The illumination bulbs in the cluster light up, the indicators for blinkers, flashers, and hi beams work.
The speedo, tach, oil, battery, temp, and fuel gauges show no reading.
I took out the cluster and replaced the circuit board in the small slot on the back... no change. I also replaced the cluster with a used cluster (presumed good)... no change.
There are 2 plug ins on the back of the cluster. One is black and one is white.
Looking at the black on in the direction it plugs into the cluster is has a total of 16 pins from 1 to 9 with a small space and the remaining 7.
As in 1 2 3 4 5 6 7 8 9 - 10 11 12 13 14 15 16
The white plug (also facing in the direction it plugs into the cluster) also has 16 pins from 1 to 7 with a small space and the remaining 9.
As in 1 2 3 4 5 6 7 - 8 9 10 11 12 13 14 15 16
I checked for 12V reading on each pin of the BLACK harness... it shows power on both pins #6 and 13 with the key on and car running. No other 12V power.
With the the headlights on and the HI-BEAMS turned on those 2 terminals retain power and the #15 pin then gives a 12V reading.
On the WHITE harness... There are NO pins providing a 12V power feed with the key on and the car running. If I turn the FLASHERS on the #1 pin flashes a 12V reading. With the headlights turned on the #11 pin gives a 12V reading.
On the clock, there are 8 total pins. TWO pins with wires on the top 4 slots and THREE pins with wires on the bottom 4 slots:
Note: Terminal slots 3,4, and 5 are empty.
As in:
1234
5678
With the key on and car running #2 and #7 pins give a 12V reading. With the headlights on they retain a reading and the #1 and #8 pin also give a 12V feed.
Pin #6 never gives a 12V reading under any conditions.
I am presuming that there is a module in the car that sends gauge information to the cluster (???). If so, where might it be located, and can it be tested?
PM me or email at [email protected]
