Cold Draft While Driving

[vincee]

Flash light and spray foam is a good suggestion. If you do the fan idea, being inside the rig with a candle burning may show wind coming through. Careful its not a tall stem candle that will light the thing on fire. Good luck in your search and let us know if you solve the problem.

[Unplanned Tourist]

Do like the pros do and put a good sized fan in an open window blowing outside. It creates a negative pressure inside. Air will come in any leaks you have. To find them you may be able to feel them, but if not, find an incense stick and light it. Move it around very slowly watching the smoke. You will see when you are close to a leak, the smoke will tell you.
Naturally you must have all windows, doors, vents and heaters turned off.
Happy Glamping.

[findleyt]

I found a seam between the bulkhead (firewall) and the dash had come loose (stripped screws) an obvious air intrusion sight.

I replaced the #8 screws with #10 and added some washers.

Also, that dash top panel and windshield trim has no insulation under it. Would like to add some insulation there.

I'm going with the bright light under the hood idea tonight to see if I can find anything else.

Good Catch. Thanks