Earlier Mustangs used a 2-speed switch. One is red, one is orange, and the other is black. Power comes from the fuse box to the switch, and, goes from the switch to the blower motor. If the blower motor that you have sticking through the firewall has two wires coming out of it,unplug them both, turn the ignition key on, and check the two wires that you just unplugged the blower motor from, the two that are part of the wiring of the car, for power with a volt meter. There will be a three pin connector and a yellow single wire attached to it. You will notice that there is no ground wire in this system.
Each prong on the heater resistor package will turn the blower at a different speed. If it's 40 degrees outside, just keeping the windows up and the cowl vents closed isn't going to warm the interior. On my '66 fastback, this was one of the problems. We do not take down our videos you see everything. Slide the bezel out and disconnect the speedometer cable. However, previous owner decided to repair heater, and so I have 3 speed heater, 3 speed switch, and no place to plug in the resistor wires.
Did you check to connections under the hood, you should find a brown wire and a yellow wire. The 65 heater switch and the 66 heater switch are not interchangeable. If your confused now, this should help. The heater blower motor has power coming from the component to the switch. Speed is dependent on which resistor is grounded. My plan tonite is to check continuity on the engine side from blower to firewall.
December 15, 2013 For those who drive their vintage Mustangs in the fall and winter months, having a functioning heat and defrost system is essential for driver safety and comfort. Wire scheme 1966 mustang heater wiring diagram additionally mustang ignition wiring detail along with d heater motor issues heater blower wiring also with d az c additionally mustang wiring diagram radio audio additionally mustang foglamp including inter as well as toyota corolla including mustang ignition wiring detail along with stereo as well as mustang vacuum diagram air conditioning furthermore instr moreover ford ranchero wiring diagram right page 1966 Mustang Heater Wiring Diagram Comments and Responses on Wiring diagrams, engine problems, fuse box, electrical diagram, transmission diagram, radiator diagram, exhaust system, suspension diagram. You can see the progress from the day we purchase your future Mustang until the day you buy it from us. I hope this helps, Jeff before installing the blower motor I did check it for operation and it does work good. It also creates intrinsic value the Mustang we call a MustangMedic Mustang. The fan motor should run at 3 different speeds.
Just good, solid advice from people that know what they are talking about. None of that ridiculous one-upmanship, no flaming or abuse, none of that stuff. This video series is truly a learning experience for everyone involved! This will take the dash switch out of the picture. And I think, truth be told, that this is by far the largest class of Mustang owners. I spent many hours tracking this down, because the connection looked fine when measuring with a multimeter, but when putting the circuit under some real load the heater fan , it became apparent that the selector switch grounding was indeed a high impedance ground that would fail when a moderate amount of current was attempting to flow thought the circuit. If you read much more than that between any of them, then your resistor pack needs replacement.
Have done the following: Hook the 2 wires coming out of the fan and connect them to the battery. With the test light, touch one of the prongs on the heater resistor package. So let me paint you a picture. Once you start driving, the cold air hitting the windshield is going to create visibility issues that a functioning defrost system can remedy versus a quick swipe with a towel at the red light—you know who you are. They take their car to some technician when what they actually need is a mechanic, and this, frequently, does not work out very well at all for the owner. The switch is the end path to a ground, each detent selects a resistor thru which the current passes thru before reaching a ground.
The two blower motors work in an entirely different way. William Wieting 856-332-9044 williamtwieting mac. I'm not sure how to fix the issue if that part checks out ok. Ac wiring diagram for 1970 chevelle best place to find wiring and 427 gm hei wiring online wiring diagram rh 10 code3e co 1970 chevelle engine wiring diagram 1970 chevelle heater ac wiring diagram. If both of the wires you unplugged the blower motor from are hot, plug one of them into the motor and run a new wire from the other wire on the blower motor into the car and plug that into the single connector on the resistor. I have a question about the blower wiring on a '65 Mustang 3-speed switch. Most everything related to the '65-'68 Mustang heater assembly is reproduced these days—even the heater box itself—save for a few minor parts when you get into the '67-'68 model years.
The switch feeds power from one of the three wires coming into it, depending on which position the switch is in, straight into the metal of the dash. From there it connects to the Engine feed gauge harness under the hood to the blower motor. If you know a friend with depression or struggle yourself it's worth a look. In any of the speeds the power is then grounded causing the motor to turn. Your email address will not be published. I left it large so that you can read it to follow it.