1965 Gauge cluster lights

[prorac1]

1965 Plymouth valiant guage cluster.

Oil light works
High beam indicator works
Turn signal indicator works.

The other 3 are guage lights

Only the far right guage light works

The other two do not.

New bulbs, and we cleaned and tensioned the contacts on the sockets.

Bad circuit board?

Haven't been able to check guage operation as of yet. Haven't started the car yet.

Any thoughts are appreciated.

Thanks. Eric

 

[Mike69cuda]

I think there are multiple grounds on the circuit board, each one is grounded by a nut that contacts a copper trace on the board. I put star washers under mine to make better contact.

 

[67Dart273]

If you look closely at the PC you can see where the traces go, just a simple matter of "ohming" them for continuity. Combination of broken/ loose connector pins, dirty/ corrosion where the sockets fit, etc. Swap the good one into the other postions that will quickly tell you if the board is sending power to the other postions

While you have it out, add a ground pigtail to the cluster and bolt it to the column support

 

[prorac1]

I think there are multiple grounds on the circuit board, each one is grounded by a nut that contacts a copper trace on the board. I put star washers under mine to make better contact.

If you look closely at the PC you can see where the traces go, just a simple matter of "ohming" them for continuity. Combination of broken/ loose connector pins, dirty/ corrosion where the sockets fit, etc. Swap the good one into the other postions that will quickly tell you if the board is sending power to the other postions

While you have it out, add a ground pigtail to the cluster and bolt it to the column support

Ok. Thank you very much guys we will give this a **** and report back.

Thank you very much. Eric