Condensation in my Tranny temp gauge

[samiam]

I've had the gauge for a couple months. I have three on the pillar, tranny on top. I haven't yet figured out any rhyme or reason to it. sometimes the trans temp gauge has condensation on the inside of the glass - maybe it's done it three times in two months. it doesn't show up until i start the truck, and it clears up in about ten minutes afterwards and looks crystal clean. this morning it was about 48 degrees and damp outside when it happened. i haven't noticed either of the other gauges (EGT and Boost) doing this. anyone have any ideas? btw they are auto meter pro comp.
one theory i have is that the engine's heat at startup is coming through the firewall at the point where the guage wires all enter.

[samiam]

shoot maybe i shoulda posted this in the general discussion...

[jesilvas]

maybe a bit of water leaking in your windshield and into it?

[symbols]

Sounds like a bad gauge to me

[jesilvas]

i wouldn't think that the gauges should allow any water in. might have been manufactured near a faucet?

[NCHornet]

That gauge should be sealed, but where is the moisture coming from. You may have a couple issues, a bad gauge and a windshield leak. They are known to leak on the drivers side, so check down below for any wetness and then call AM and have them send you a new gauge!!

NCH

[Dreed]

Mine did the same thing twice in the past two weeks. It was the only one of my 3 gauges that did it. It's on the top of the pillar. Hasn't had a problem since. I figured it was just a fluke or something. The gauge works fine still.

Dave