You likely have http://www.automotionshade.com/English/Product-More.aspx?pSerial=&serial=144&parentNode=1§tSerial =136
AutoMotionShade (AMS) installed at your windshield location.
- Windshield shade for Class A Motorhomes.
- Dual motorized day/night roller shade.
Adjustable mounting brackets
- Two 12V DC motors.
- Heavy duty, powdered coated black aluminum mounting rail.
- Available with external or fabric covered hem bar.
- Can be supplied with optional fabric skirt.
- Can be equipped with side-by-side or over-under brackets.
Mounting brackets can be placed anywhere along the mounting rail, Which allows to position them where the ceiling best supports the shade.
To prevent the shades from accidentally dropping out of misaligned shade brackets, they are being fitted onto a single, sturdy mounting rail, which guarantees perfect bracket alignment during installation.
The safety clutch blocks the shade completely if the shade is not properly engaged in it's bracket.
Motor automatically shuts o to prevent overheating if shade gets stuck for any reason.
Unique safety springs will not only prevent shades from unravelling in case of component or motor failure, but they will actively reverse shade movement and lift it out of drivers sight. This is an industry rst.
Ignition Lock / Safety Wiring:
Although dual front roller shades were originally not developed to also act as sun visors due to safety concerns, new safety techniques now enable the shades to perform this additional function as well. While the ignition is on, the shades will only be allowed to travel as much as needed to protect the driver from the sun and glare but not to inhibit his view of the road. Once the ignition is turned off, the shades will be able to travel all the way down to give full sun protection or privacy.
Here is a irv2 link http://www.irv2.com/forums/f59/elect...is-170409.html
with a Electric Sun Shade Diagnostic PDF file on the likely suspect, the tube motor. The AMS shades installed on Newmars and Tiffins have a known weak link, the motor. PDF file tell you how to upgrade the motor. Other possibility is that you need to reprogram your Ignition switch on and off upper and lower limits. My money is on the motor.