Fuel gauge. Again.
You either have a cross (short) in the harness somewhere, or a grounding problem in the cluster. On my 67, the contact fingers that engage the VR were not making contact. The cluster must be grounded as does one terminal of the VR You really SHOULD add a ground pigtail from the cluster to the dash frame or column support
Check this thread
Printed circuit pins repair
here, post 16 if the new software works
Printed circuit pins repair
My own soldering was not as neat. But it works
You either have a cross (short) in the harness somewhere, or a grounding problem in the cluster. On my 67, the contact fingers that engage the VR were not making contact. The cluster must be grounded as does one terminal of the VR You really SHOULD add a ground pigtail from the cluster to the dash frame or column support
Check this thread
Printed circuit pins repair
here, post 16 if the new software works
Printed circuit pins repair
My own soldering was not as neat. But it works