WIRING QUERY

[Artisan]

Guys can anyone tell me what the TSM is refering to here?

The connector I have a red arrow on, is that supposed to be the
circle / ring instrument cluster connector?

If so what pin ?

I have 3 gauges out, TSM suggests that my temp gauge w/ CVR is bad
but what about this part?

https://ibb.co/2jyhwWY

[tgreese]

Guys can anyone tell me what the TSM is refering to here?

The connector I have a red arrow on, is that supposed to be the
circle / ring instrument cluster connector?

If so what pin ?

I have 3 gauges out, TSM suggests that my temp gauge w/ CVR is bad
but what about this part?
https://ibb.co/2jyhwWY

This is on the cluster. Look at the pictures in section 3 of the TSM. It would also help to read the wiring diagram. Use your multimeter and trace out the wires from the diagram.

No need to send PMs or emails. I would prefer to continue this discussion on the forum, where it can be shared with the community. Others may have comments to contribute too.

[Be from Be]

I am not sure what connector is referred to.
I would suggest to remove the instrument panel and measure voltage at the temp gauge with ignition in the on position. Temp gauge has a built in voltage regulator that emits about 5V. There are three connectors on the temp gauge. If I remember correctly, the lower connector should read 5V. If the voltage regulator is out, you can replace it with a cheap 7805 voltage regulator.

[Artisan]

Thank you Tim...

FWIW for the life of me I can not find that A-Z pin out diagram in section 3C of my 1979 TSM and I am just HORRIBLE w/ anything electrical.

A- WARNING LIGHTS
L- GAS GAUGE
K- HIGH BEAMS
J- CLUSTER LIGHTS
G- LEFT TURN
F- RIGHT TURN
E- IGNITION
C- TEMPERATURE

I did just find this;

https://ibb.co/ry4tY31

Here is the ring connector I have;

https://ibb.co/zbmcFb3

I have since been told that the TEMP GAUGE has a CVR Constant Voltage Regulator and if it is out all 3 gauges will be DOA... I have ordered a new one this AM...

Guys if you look at the ring connector I have pictured should any be HOT
all the time when the key is on?

(The tsm shows a flat connector like I show in post 1, I have a ring )

[tgreese]

Thank you Tim...

FWIW for the life of me I can not find that A-Z pin out diagram in section 3C of my 1979 TSM and I am just HORRIBLE w/ anything electrical.

A- WARNING LIGHTS
L- GAS GAUGE
K- HIGH BEAMS
J- CLUSTER LIGHTS
G- LEFT TURN
F- RIGHT TURN
E- IGNITION
C- TEMPERATURE

I did just find this;

https://ibb.co/ry4tY31

Here is the ring connector I have;

https://ibb.co/zbmcFb3

I have since been told that the TEMP GAUGE has a CVR Constant Voltage Regulator and if it is out all 3 gauges will be DOA... I have ordered a new one this AM...

Guys if you look at the ring connector I have pictured should any be HOT
all the time when the key is on?

(The tsm shows a flat connector like I show in post 1, I have a ring )

Did you look at the wiring diagram?

Look at page 1L-44 in the '79 TSM. That could hardly be clearer. Look at Fig. 3-63 in the '77 TSM. Read the manual.

Sorry, I can't do it for you.

[tgreese]

Guys can anyone tell me what the TSM is refering to here?

The connector I have a red arrow on, is that supposed to be the
circle / ring instrument cluster connector?

If so what pin ?

I have 3 gauges out, TSM suggests that my temp gauge w/ CVR is bad
but what about this part?
https://ibb.co/2jyhwWY

If your objective is to measure the ignition voltage, this picture is wrong. The ignition is pin 11 on the round connector. The ignition voltage does go across the circuit board to the emergency drive pin #1 on the flat connector. However, this goes to the transfer case and is grounded when the e-drive is engaged. There is no ignition power in the flat connector, once it's unplugged from the board. The picture isn't helping you. Suggest you do what it tells you to do and don't pay too much attention to what looks like artistic license in the drawing.

I think the main problem is the picture shows the flat connector unplugged. If you measure pin #1 at the circuit board (with the ignition switch on) you will see full ignition voltage. If you measure the flat connector at pin #1 with the connector plugged in, you will see full ignition voltage. When you disconnect the connector from the circuit board, you break the circuit to the flat connector pin #1, and you will measure either open or ground, depending on the state of the e-drive switch.

Bad communication with the artist that made the drawing? Seems likely. Do what it says, not what it shows.