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I need an wiring diagram for a under dash Frigiking (model 1970 sportster I think? that's all I could find).The switches were pull out so I need to rewire the whole thing.
I've got three leg resistor,two off stat switch,two from motor a (+)&(-)and three out of unit two are ? third goes to stat
Thanks for any help BillW

Try eBay for a service manual. tHat's where i got my Mark IV manual.

But u don't really need a wireing diagram. A good guess will make it work:

3 leg rheostat: It control the fan motor. 1 wire is feed from from ignition switch. 2 nd wire to fan motor. a third wire feeds the rest of the switches.

Thermostat: One wire goes to compressor clutch. second wire is feed from rheostat switch.

One of the fan motor wires goes to ground.

There is probably a lite involved too. That would be turned off and on by the rhostat switch.

What kind of car is on????

As PV8 says, it is a basic circuit but there are some variations. Unsure from your description if you have the blower switch with the resistors attached or if you have an on/off and separate resistor block. Here is a schematic showing separate resistor block. Pick your own colors and wire as shown. If you have the switch with resistors then the blower would connect to the H terminal on that switch instead of resistor block.

If you have a single on/off & speed switch, then one side the thermostat will attach to the C terminal on that switch instead of the separate switch the schematic shows, otherwise the same.

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It's going to end up in a 1955 clipper super panama.
thanks for the help!

Thanks for all the help!Will let you know how it work out.
BillW

Just out of curiosity is that a FrigiKing wireing diagram or from some other unit???? Maybe a factory Packard diagram???

One of the less expensive early AMC factory units but basic hang ons are all about the same.

Differences usually is age and type of blower. Unless a single speed, the older motors with two wires use something with resistors like this or a simple rheostat. 53-4 Packards used the resistor block because of confined control box, 55-6 Packard used rheostat. Stude's with hang ons I have info for, rheostat. Cheap but effective -- downside is heat dissipation - fairly large & resistors have to be in the airflow or in the open.

Later aftermarket units with motors having 4 or 5 wires use same basic multiposition switch but no resistors and feed field coil differently. Less current & no hot resistor to worry about.