HVAC controls retrofit

[stangbear427]

I have a set of the arguably better looking HVAC controls with trim besel from a '93 I'd like to put in my wife's '89, anyone know if it'll work before I go ripping hers out? I know it will bolt in, just wondering about the plugs on the back. If it wont just plug in and work, it isn't worth it. Anyone done it in a pre-'90 Fox?

 

[_jb_]

I'm guessing it would be the same, just a different design. I was going to change it in mine, but I never looked close at it.

 

[Euphoric306]

can i see a pic of this?? i wasnt aware the 90+ foxes had different hvac controls

 

[stangbear427]

can i see a pic of this?? i wasnt aware the 90+ foxes had different hvac controls

Yeah, the '90+ ones have the fan control on the left, the knobs are smaller and the trim besel is just one big opening for all three knobs, where the '87-'89 have three round openings in the besel and the HVAC selector is on the left. Here's mine and my wife's, it should give you an idea what the newer ones look like even though I have the white face and billet knobs:

 

[Euphoric306]

i think its kickass ur wife drives a 5.0 as well...

and now that i see it... i have seen those sontrols before, i guess i never really conscienciously noticed they were different

now that i see em side by side, i like the bigger, separated knobs better, and im glad thsoe r the ones i have hehe

 

[stangbear427]

I don't dislike them, they just look... old. More importantly, my wife likes the newer style better, so if it isn't too much trouble I'm going to do it. I guess I'll just have to pull them out and see.

 

[89MustangGX]

All of the plugs are the same, the moutning is different. Been there, done that.

 

[stangbear427]

C'mon Adam, don't you have anything productive to add? DETAILS MAN! Actually, I pulled it out today and see what you mean, but since you said "done that", I'm assuming you got it bolted in somehow? I think I can figure that out too, what I'm really curious about is this: once I started loosening up the left control plug (with the HVAC job selector) something started hissing. Are those vacuum lines? Am I going to run into any problems unplugging this?

 

[ss93cobra]

I did the switch on my wife's 87 as well. You'll need the control head, switches, knobs, and trim panel. The switches are in different locations, but the wiring, vacuum, and cable you currently have will reach and will work just fine. No other parts are required.

 

[The Shape]

Wow I have an '87 and a '93 until reading this I hadn't even noticed them being different!!! My observation skills must be a bit dull LOL

 

[ss93cobra]

Age has its ways.....


what was I saying.....?

 

[stangbear427]

So what happens when I unplug the left side? What's hissing, and is it something I'll have to re-pressurize or something?

 

[ss93cobra]

The system holds vacuum from when the engine was last on. No, you'll be fine, just start the car and turn it on.

 

[stangbear427]

Cool. Thanks

 

[The Shape]

Age has its ways.....


what was I saying.....?

EXACTLY

 

[ss93cobra]

Cool. Thanks

Not a problem. Nobody knows everything. -except the shape, but he forgot!

 

[The Shape]

Not a problem. Nobody knows everything. -except the shape, but he forgot!

Who's The Shape???

 

[ss93cobra]

 

[trbkrb]

I had to lengthen the yellow vacuum line that goes to the defroster damper on mine. It was not long enough to reach when I swapped the controls. And the electrical connection for the fan switch is a bit short. I had to work with it a bit to give me enough room to connect it up. To fit it in the 87-89 dash, I drilled two new holes in the 90-93 panel that matched up with the mounting points on the dash, since the holes are in different locations. Overall, it is a much nicer look IMO.

 

[stangbear427]

Thankyouthankyou. Good stuff. If I can just get the wife to sit still for awhile, I'll take another shot at it.