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Windshield Shade Installation
Without a doubt windshield shades are an important part of a motorhome. The huge glass area allows lots of sunlight in. When driving this can become a safety hazard so most RV manufacturers install some form of sun visors. On entry level RVs this may be a small flip-down visor that is hard to reach from a driver's sitting position and provides very little area for blocking the sun. Larger coaches may come with a pair of powered sun visors that are controlled by rocker switches within reach of the driver's and copilot's seats. They utilize a black vinyl material and a scissors type mechanism to extend and retract them. This is better than nothing but there are large gaps between the two visors as well as around the corners of them and, for some odd reason, that's always where the rising or setting sun happens to be.
When parked the powered visors can be lowered to help keep some of the sunlight from penetrating the coach and heating the interior up. This is somewhat of a help but the heat trapped by these visors works its way around the sides so they are not 100% effective. Also, you cannot see through them so visibility out of the coach is affected. For nighttime privacy a set of pull drapes is employed to curtain off the windshield and cockpit side windows. The cockpit side windows on my coach came with sun screen shades that pulled down manually, then retracted with a snap when the lanyard was pulled. The awkwardness of these shades, plus the minimal sun filtering that they provided left much to be desired.
After seeing the MCD cockpit shades on newer Tiffin models Leann and I decided that we would like to replace our power visors, cockpit side shades, and drapes with MCD products. We arranged to have this done at MCD's facilities in McKinney, Texas as well as replace the pleated shades in the living area with MCD shades. The end result is phenomenal. The MCD shades provide excellent temperature control in the coach. They filter out the sunlight but also do an excellent job at creating a thermal barrier, regardless of whether the sun is out or not. They work equally well at keeping the interior nice and warm during cool weather as they do at keeping the interior cool during warm, sunny weather. They are very easy to operate and when the nighttime shades are down the cockpit is much darker and has less light infiltration at night. Overall we are very impressed with the MCD shades and find them a cut above anything else.
In the following section I'll detail the actual process used to install MCD's American Duo windshield shades in my 2007 Allegro Bus. We also installed cockpit side window shades but I will leave that for the chapter that covers powered shades because the windshield shades have some unique features that require different installation procedures than side shades.
Original Visors and Side Shades
My 2007 Allegro Bus came with the two powered Carefree sun visors as well as manual side shades. As the above photo illustrates, there are large gaps on either end of the visors and the side shade does not cover the entire window. You have to be tall to reach the side shade in order to pull it down when driving. In order to retract it you need to fish around in the drapery to find the pull cord. Again, long arms are needed. Once you finally get the cord and give it a pull, the shade snaps up at the speed of light. There is no stopping it midway nor can you control its rate of ascent - which is very fast. Also, the purported "sunscreen" material is basically fiberglass bug screen and has little to no R-value. The power windshield visors were controlled via rocker switches. The driver's left side console had a pair of switches - one for each shade. The copilot had a single rocker switch at her side to control her visor so the right side could be controlled from either seat. We decided to replace the power sun visors with the American Duo full width sunscreen and privacy shades. This dual roller system could easily be powered via the existing rocker switches. I chose the standard method, which is to operate the nighttime privacy shade from the single rocker switch on the driver's side while allowing either seat to control the daytime sunscreen shade. That made wiring these shades a simple task.
Measuring and Planning
Original Visors to be Removed
Before we start mounting things it's important to thoroughly analyze just what you have and come up with a plan on how to install the shades. Coaches vary greatly from model to model and year to year so not every coach installation will be approached the same way. The first step was to remove the existing shades and drapery to get them out of the way and give us a clear area for the installation.
Measuring the Width
In order to properly measure the width of the windshield shades it's best not to use a tape measure. MCD installers use a telescopic pole that has a pair of shade brackets installed on each end. This allows them to move the pole up and down within the range of motion that the shade will operate in. The pole can be adjusted to prevent binding in any tight spots, which are generally near the top. A tape measure just isn't capable of providing accurate measurements in this situation. If performing a do-it-yourself installation I'd recommend modifying some sort of extendable closet pole or whatever to perform this task. The shade should have a minimum of 1/4" clearance from the windshield on either side at the narrowest spot to prevent binding.
Checking for Single or Split Shade Usage
Ideally, the shades will be installed as a single shade covering the full width of the windshield. Sometimes this is not possible, depending on the overhead cabinetry design. Some overhead cabinets have large CRT TVs in them. The extra depth of these TVs requires deeper cabinets. In my case, I had a flat screen LCD TV but Tiffin never bothered to change the backside of the cabinet because it wasn't necessary. They began using MCD shades the following year so at that time the bulge on the backside of the cabinet was removed. As the above photo shows, this bulge forces the measuring pole (which represents the position of the shade) farther forward into the curved sides of the windshield. If this makes the shade too narrow a split shade system will be required. A split shade will have a small overlap of maybe 1" where the two pieces of fabric overlap. This will leave a small darker stripe in the middle although no additional switches will be required to operate the shades. The other alternative is to remove the upper cabinet and modify it by trimming off the back end. Fortunately, in my case the shade roller would only be slightly forward and we could live with that.
Checking for a Flat Dash
Dashes vary from coach to coach. For privacy reasons you want your shade to meet the dash, with no gaps. Some dashes are not flat and have a fairly large hump to them. Some dashes are slightly cocked and not perfectly parallel with the ceiling. Getting a straight shade to match a humped or slanted dash just doesn't work. Normally a shade will have a flat hem rail that does not flex. For those situations where a humped or slightly sloped dash is involved, MCD can make a windshield shades to compensate for this. Rather than use a rigid aluminum hem rail, MCD installs a rigid micro aluminum extruded tube inside the shade, which can be between 2" and 6" from the bottom, depending on just how much that particular coach needs. The very bottom flap of the shade is filled with a large number of ball bearings. This allows the shade to hang nice and flat but the base will conform to the dash when fully extended. This is not a sloppy bean bag appearance. It's a nice professional look and you wouldn't even know it's created that way. To see if your coach needs this style simply place a large level or straight edge across the dash and check for gaps. Also be sure to grab a tape measure and check the distance between the dash and the overhead ceiling to see if the dash is parallel to the ceiling or has a slope to it. In my case the dash was both flat and parallel to the ceiling so this procedure was not necessary.
Modifying the A Pillars
Adding A PVC Strip to the A Pillar Trim
Modified A Pillar Trim
Ideally the shade would drop down and rest on the front side of the windshield A pillar trim as it lowers. If the A pillar trim is fairly curved or small, this may not be possible. In this case it may be necessary to install a track for the shade to ride in. In my case the windshield trim was fairly flat on the front so a track would not be required. However, the trim was slightly on the narrow side and the shade would have fallen inside the track on the copilot's side. To correct this a small PVC strip was attached to the passenger side A pillar trim to space it out from the wall farther. A piece of strong 3M double sided VHV fastening tape was used to eliminate the waiting around for PVC cement to dry. It's impossible to see from the coach interior and when viewed from the exterior through the windshield it looks just like its weatherstripping and supposed to be there. This was an excellent workaround to correct a narrow trim situation. You could split the difference and add a piece of trim to both the driver's side and copilot's side A pillars but 1/2" isn't that noticeable so it really wasn't necessary. Also, fattening up the driver's side pillar trim would also mask a bit more of the driver's line of sight to the left side mirror so it was decided to simply modify the copilot's side.
Note that this was a 2007 Allegro Bus. Beginning in 2008 Tiffin offered MCD shades in the Allegro Bus so future years had fatter A pillar trim and did not have to deal with the bulge on the backside of the overhead cabinet. However, if you are retrofitting an older coach these are some of the considerations you may have to deal with. That's why it's important to take the time to analyze just what you have and plan and measure accordingly to prevent running into any brick walls later on.
Mounting the Shade
Track Mounting Clips
MCD shades come mounted via either a single roller or dual roller bracket to a mounting track. This track snaps into place on the ceiling into a number of mounting clips. The number of clips depends on the width of the shade. Windshield shades are the most critical so they will generally have 6 mounting clips. It's important to use double clips at each end of the windshield shades. The remaining clips get evenly spaced out. Using double clips helps hold the larger track assembly in place and also guarantees that if a clip should ever pull out, your shade won't come down when driving. In the above photo you'll also see a temporary mark made on the ceiling to align these clips. It's best to hold an empty mounting track in place to mark the location of the clips. It's easier to do this than when the shades are providing additional weight for you to hold up. A second pair of hands is helpful at this point.
Extending the Wiring
The original powered visors were fed by short wire leads coming from the center of the overhead cabinet. The MCD shades are full width so the motors will be on the far end of the shade rollers. It may be necessary to extend the existing shade wires in order to reach that location if there is not enough slack in the existing wires. Once installed the wires can be tucked behind the shade mounting track to keep them supported and hidden. You will also need to access a power source that is switched hot whenever the ignition key is on. There are a number of locations behind the dash that offer this switched power. In my case the mirror heat switch was powered via a circuit that was switched by the ignition key. This "ignition sense" wire is necessary to operate MCD's exclusive dual range safety feature on their windshield shades.
Once the shade is mounted into the clips and the wires are connected, you'll need to program some stop positions. MCD windshield shades utilize a dual range motor. You will need an upper stop position for when the shade is up as well as a lower stop position for when the shade meets the dash. For safety reasons MCD has also designed programmable upper and lower stop positions for when the ignition is on. When the key is off you'll want full range of the shades so that they can totally seal off the windshield area by contacting the dash. However, if a switch were to stick in the on position when driving you'd be in serious danger because the driver wouldn't be able to see out the windshield if the shade powered itself all the way down. For that reason, a separate set of upper and lower limits is entered for when the ignition key is on. The lower limits of the shades should be set so that the driver can still see out from underneath them while still providing adequate shielding from a blinding sun. This is best done when sitting in the driver's seat in the normal driver's position. This is just another unique safety feature that only MCD offers. For exact details on how to program your set limits please refer to page 8 of the MCD Owner's Manual
Once the shade is installed and programmed it's ready for use.
In the next chapter we'll follow the installation process of a set of manually operated MCD shades.
Mark Quasius - "Cruzer"