Time for some changes to the hvac control on the box. I've got a vacuum slider control that is becoming worn out, and it has gotten the ball rolling finally to get going with this conversion. For whatever reason, I always through the car should have rotary controls anyway, so its an painless choice. Now, wether it will actually happen remains to be seen. Some ghetto-fab aka redneck engineering is going to need to happen, but overall, it should be relatively easy.
The donor: HVAC control from a 92-95.5 F150/250/350/Bronco. Or the faceplate right to 1996. (from here on in, when I say f150, I mean the entire line)
Why?: Look at the cable: Single push-pull cable.
This was used until about mid 1995, when they redesigned and went to the pull-pull (dual cable) control. Also note: tsb 961307 was released mid 95 to address difficult to move blend door control, it converted the truck to the pull-pull cable. So you will need to look behind the glove box door of the truck to see what it has.
Another bonus to the truck faceplate: Its glorious green!
If you are one of those odd folks that get off on blue (blue lightinng makes everything fuzzy to me, which is why I hate it) get the faceplate and knobs from a 94/5 mustang. See this photo? Thats what blue lighting ends up looking like to me.
While going through my research on this, I found out that the f150 uses the same general vacuum control arangement. So that means the function control switch will give you the correct vacuum signals to operate the doors.
Now, one thing I came across as a bit of a surprise since I was long ago told by Matt (p71interceptor-RIP) that all the cv/gms used the same vacuum control, is that ford changed the function selector switch for the 1998 model year. (uh oh. Those of you who pm'd filled in that gap). 98+ uses a YH1489 selector switch and pre 1998 uses a YH565 selector switch.
YH1489 is only used on 1998-2011 cvgms.
YH565 is used on the donor vehicles as well as 95-97 cvgms.
Peectures of the offending vacuum control switch;
YH565 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ YH1489
See the difference? Yeah, those little plastic nubs by the shaft.
Walla! My conversion has started! My YH1489 is now a YH565!
What do those nubs mean? Aside from a part number change, they mean absolutely nothing. Later face plates have notches in the back to accomodate those nubs. Early face plates have no notches. The pencil marks on the left hole show where the 98+ cvgm has notches in the faceplate to accomodate the nubs. Looks like one more place to collect dust to me. Might even have different slots for different controls (ie: the mustang face plate) since it uses a different vacuum logic. No matter to us, regardless of what faceplate you use, if you have the 98+ control, off with their nubs! And it will slip on perfectly.
Sp back to vacuum for a moment, and an interesting thing will emerge, despite hearing differently, the vacuum line colors match up to the box colors! No mix and matching required. Red to red, white to white, etc. Once I pull it apart, I might get luck again that the exact same quick connect layout is used so it'll really be a plug and play swap. That as yet, remains to be seen though. Things have been too busy around here for me to start ripping the dash apart, so that will need to wait, unless someone has a photo of the quick connector on the vacuum harness of the box... <hint hint> =-)
Another item that needs to be done is wiring. Well, Ford has been nice enough to use the same wiring color codes on the cvgm right through to the end. So all that needs to be done is the pins popped from the original connector to the new connector if that happens to be your donor plug.
Same deal for the blower, pretty straight forward, just swap the wires to the new plug. Gotta like some of the unchanges. (but I really do have to wonder why they bothered to change the vacuum selector switch... Now they got an extra part to carry. Manfuacturer logic is probably a lot like woman logic...
Blower switch part number: YH588. Lots of apps, so lots of donors (different wiring colors used in the non-panthers).
Used for 95-11 cvgm, 95-03 exploder, 94-04 mustang, 95-00 ranger, and 94-98 taurus, sable, windstar.
So there you have it, the basis of a rotary hvac control swap for the box. The only pita is going to be adapting the cable to the box. And if luck stays with us, that flat spring clip that holds the original cable to the blend door arm will be put to use. Potential problems I forsee: The rotary knob will not go full travel (but theres a possible way around that using the white plastic thingamabob that is used on the f150. Just more ghetto-fab) and limit marks will be made to inform the ham fisted that might ride/drive your car. And there is a possibility Hot side will be cold and cold hot. No matter, as long as it moves the door.
Alex.
The donor: HVAC control from a 92-95.5 F150/250/350/Bronco. Or the faceplate right to 1996. (from here on in, when I say f150, I mean the entire line)
Why?: Look at the cable: Single push-pull cable.
This was used until about mid 1995, when they redesigned and went to the pull-pull (dual cable) control. Also note: tsb 961307 was released mid 95 to address difficult to move blend door control, it converted the truck to the pull-pull cable. So you will need to look behind the glove box door of the truck to see what it has.
Another bonus to the truck faceplate: Its glorious green!
If you are one of those odd folks that get off on blue (blue lightinng makes everything fuzzy to me, which is why I hate it) get the faceplate and knobs from a 94/5 mustang. See this photo? Thats what blue lighting ends up looking like to me.
While going through my research on this, I found out that the f150 uses the same general vacuum control arangement. So that means the function control switch will give you the correct vacuum signals to operate the doors.
Now, one thing I came across as a bit of a surprise since I was long ago told by Matt (p71interceptor-RIP) that all the cv/gms used the same vacuum control, is that ford changed the function selector switch for the 1998 model year. (uh oh. Those of you who pm'd filled in that gap). 98+ uses a YH1489 selector switch and pre 1998 uses a YH565 selector switch.
YH1489 is only used on 1998-2011 cvgms.
YH565 is used on the donor vehicles as well as 95-97 cvgms.
Peectures of the offending vacuum control switch;
YH565 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ YH1489
See the difference? Yeah, those little plastic nubs by the shaft.
Walla! My conversion has started! My YH1489 is now a YH565!
What do those nubs mean? Aside from a part number change, they mean absolutely nothing. Later face plates have notches in the back to accomodate those nubs. Early face plates have no notches. The pencil marks on the left hole show where the 98+ cvgm has notches in the faceplate to accomodate the nubs. Looks like one more place to collect dust to me. Might even have different slots for different controls (ie: the mustang face plate) since it uses a different vacuum logic. No matter to us, regardless of what faceplate you use, if you have the 98+ control, off with their nubs! And it will slip on perfectly.
Sp back to vacuum for a moment, and an interesting thing will emerge, despite hearing differently, the vacuum line colors match up to the box colors! No mix and matching required. Red to red, white to white, etc. Once I pull it apart, I might get luck again that the exact same quick connect layout is used so it'll really be a plug and play swap. That as yet, remains to be seen though. Things have been too busy around here for me to start ripping the dash apart, so that will need to wait, unless someone has a photo of the quick connector on the vacuum harness of the box... <hint hint> =-)
Another item that needs to be done is wiring. Well, Ford has been nice enough to use the same wiring color codes on the cvgm right through to the end. So all that needs to be done is the pins popped from the original connector to the new connector if that happens to be your donor plug.
Same deal for the blower, pretty straight forward, just swap the wires to the new plug. Gotta like some of the unchanges. (but I really do have to wonder why they bothered to change the vacuum selector switch... Now they got an extra part to carry. Manfuacturer logic is probably a lot like woman logic...
Blower switch part number: YH588. Lots of apps, so lots of donors (different wiring colors used in the non-panthers).
Used for 95-11 cvgm, 95-03 exploder, 94-04 mustang, 95-00 ranger, and 94-98 taurus, sable, windstar.
So there you have it, the basis of a rotary hvac control swap for the box. The only pita is going to be adapting the cable to the box. And if luck stays with us, that flat spring clip that holds the original cable to the blend door arm will be put to use. Potential problems I forsee: The rotary knob will not go full travel (but theres a possible way around that using the white plastic thingamabob that is used on the f150. Just more ghetto-fab) and limit marks will be made to inform the ham fisted that might ride/drive your car. And there is a possibility Hot side will be cold and cold hot. No matter, as long as it moves the door.
Alex.
Attached Files
=-) =-)
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