x

[Lil'John]

x

 

[J Mack]

My Vapir Used a variable speed fan and just used a simple pot to control it. Easy enough to retrofit a slide pot in your dash and keep the restomod fan.

 

[J Mack]

If you know the kOhm value of the restomod pot and the length of the Toyota switch digikey should have something close.

Slide Potentiometers | Potentiometers, Variable Resistors | DigiKey

 

[cruiserbrett]

There is a switch out of a mid seventies Toyota sedan/wagon that is very similar to the lever mounted switch up to 1973, and it has three speeds...

I found one a long time ago, and thought it was worth looking into. However i have since misplaced it...

 

[RocketCityCrzrs]

Put in a switch from a later model? My pig has 3 speeds it's a 78

 

[scrapdaddy]

If you have to make a choice, I wouldn't worry about the low speed fan in a pig.

 

[RocketCityCrzrs]

Here is what my dash looks like:

Well, similar except it has a separate bezel for the labeling.

Here is what newer dashes look like(74 and newer):
View attachment 1867256
I'm not converting to 74 and later.

Gotcha, didn't realize they were that different man.

 

[J Mack]

J Mack, my system provided a 4 position lever switch. I haven't checked if a slide switch option is available. Mounting might be interesting though

Sounds like you have a Classic auto air system.
I would order an 16-2001B and retrofit the individual components to your dash to control your system.

CONTROL-16-2001 | Classic Auto Air - Air Conditioning & Heating for 70’s & Older Cars & Trucks.

 

[PabloCruise]

Here is what my dash looks like:

Well, similar except it has a separate bezel for the labeling.

Here is what newer dashes look like(74 and newer):
View attachment 1867256
I'm not converting to 74 and later.

Gotcha, didn't realize they were that different man.

I think that "Pull For Front Fan" is kind of a rare set-up, they did not use it long.

I also think I have one of those set-ups if it would help your efforts...

 

[cruiserbrett]

I think the pull push heater switch was 68-9/‘73...

By the way, I think this has the three position switch:
1971-1975 Toyota Celica Ra21 Oem Heater Climate Dash Control Switches | eBay

The mounting is a bit different, but not impossible to fan a bracket to adapt...

 

[cruiserbrett]

Regarding getting the “fan on” signal, depends on what you want to do...

I have to imagine that a more modern logic circuit would look for a hi signal(greater than a few volts) or a low(0v) signal, as an “on or off” input.

So, try pulling the signal off the wire leading to the blower motor, After the resistor. This way you don’t have to solder the resistors together.

Strange though that the aftermarket system doesn’t have that wire already included in the harness.

Got a wiring diagram? What is the specified input for off and on?

 

[cruiserbrett]

Ok. Gotcha. That looks like it will work just fine given the logic diagram.

Not sure if it’s worth it, but a 3 phase bridge rectifier IC could work as well. Just don’t need the “-“ terminal.