Heater motor relay? No heater at all

[Firstgen11]

My heater just went out at once I put a switch on it no fix I put a power wire directly from the battery to the fan fan came on checked fuses all good checked fuse links all good I'm stumped anybidy have a resolution could it be the relay if so where is that sucker lol someone please help I need my heat

[Firstgen11]

Also is there a wire that sends power to the fan inside the piece you select where you want the heat to go like floor or defrost is there any power wires or anything in that thing that would keep it from turning on the fan also meant to say there is power on the wire coming from the fuse panel or wherever but it is also tapped into the washer fluid motor too so idk if it has power all the time or not but when the heater is on and I go test that wire it reads 9 something volts

[Firstgen11]

Could it be the heater resistor thing?

[CumminsPower59]

Punctuation please

The blend doors are vacuum controlled.

Double check the wiring, fuse and fusible links. Are you using a quality wiring schematic to trace the circuit? The blower motor resistor is on the firewall behind the glove box, open the glove box, flex the back panel to allow the assembly to pivot down more, and look up above the HVAC box. You'll see it.

[Firstgen11]

Update I replaced the resistor the fan switch watched my doors move in and out I'm stummped right now not sure what is wrong it has to be wiring but idk where to start do I start at the fan switch or what

[CumminsPower59]

Look here.

viewtopic.php?f=30&t=11477

Trace out the circuit starting at the power source for the system.