temperature guage malfunction

[torqueluvr]

1987 JDM BJ74. My "interior" and "exterior" temperature gauges do funny things. They either":

A - work great and are quite accurate in celsius
b - work great but intermittently switch from F to C
C - both read "E" I assume for error

Ambient temperature seems to make them malfunction more so in Alberta winter temps. As for the spring, summer, fall, very intermittent.

Is there a switch? wire? fuse? that is possibly the culprit? Also, my interior clock works 1/3 of time time, and when it does it flickers and dims.

Any advice?

 

[John Galt]

The clock in mine does similar things. Sometimes it's lit and sometimes it's gone. The I/O temp display is condition A all the time. Both clock and temp display dim when the vehicle lights are on.

 

[Gun Runner 5]

"Both clock and temp. display dim when the vehicle lights are on"
I would assume this condition is normal and the other intermittent displays can probably be chalked up to something as simple as a loose connection..
.......1978HJ45