1965 mustang. are there fuseable links in the wiring harness? is the orange/white wire to the windshield wiper sw the power wire (hot wire)?? I have a wiring diagram and the wire that runs from the Acc post on the ign sw starts out as green/black then goes to a rectangular box (I'm guessing indicates a fuselink) changes color to white/orange and goes to the wiper sw. It is a 2 speed wiper w washer.

Switch is bad.

The front wipers are controlled by the TIPM - totally integrated power module (electronic module ) ! Check power an ground at the wiper motor connector . Four wires , Black is ground , brown / white is low speed , brown/lite blue is high speed ,brown / orange is park switch sense . Can you do this ? Go to http://bbbind.com/free_tsb.html free wiring diagrams ! Videos on you tube on basic automotive electrical testing , how to read a wiring diagram , how to use a DVOM etc... That is if you don't already know how to . Defective TIPM Is Causing Dangerous Power Problems in Chrysler Vehicles Then again after you read this you may want to take it to the dealer !

the orange wire in the #8 cavity is your key on power wire, so yes you need it the yellow wire in the #1 cavity is the 12 volt alwise wire so you need it as well the orange wire in the #10 cavity is the right rear speaker wire + you also need it hear is the wire list.

wire #1. yellow 12 power with key on

wire #2. gray interior lights

wire #3. green right rear speaker -

wire #4. red right front speaker +

wire #5 black left front speaker -

wire #6 brown left rear speaker -

wire #7 gray power antenna

wire #8 orange 12 volt power hot all times

wire #9 pink interior lights

wire #10 orange right front speaker +

wire#11 blue right front speaker + ( door )

wire #12 empty

wire #13 empty

wire #14 yellow left front speaker + (door)

wire #15 white left rear speaker +

wire #16 black/orange ground

check the fusable link which is located inches away from the wiper motors wiring harness. If it has a open it needs to be replaced. A fuseable link is just a spliced in wire which acts like a fuse when blown. By tugging on the wire you can tell if its broken for the insulation will stretch quite a bit

There is a fuseable link on the heavy wire, not the battery cable, going to the hot terminal of the solenoid. That heavy wire (about 12 gauge) supplies power to the vehicle. Take a test light and probe the wire on both sides of that fuseable link (it says fuseable link on it). If you don't have power on the vehicle side of that link, that's part of the problem. Now you have to figure out why it blew. It may have just corroded off, I've seen that happen.

So, you have an integral regulator on your alternator.... so you have to connect the output of the regulator to your battery. You also have to connect between the regulator and the alternator. Hmmmmm how to describe....
using your descriptions of wires and prongs.....
Connect Wire Color to Prong

Yellow (w/wht dot) A+
White (w/blk tracer) STA
Black (w/orange tracer) Bat (alt output)
Ground wire Grd
Orange (w/Lt.Blue) F (field)
If battery was connected, the Black with orange tracer wire would have +12 Volts on it at all times

Your motor has power you have lost your ground,you can run a test wire and ground it, if it works you found your problem if not the motor is bad,I hope this helps you and thank you

Battery Constant 12v+ Positive Wire (+): Black/Orange And Red/White
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Starter Positive Wire (+): Yellow
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire (+): Blue (16 Gauge)
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire (+): Yellow/Red
Second Ignition Positive Wire Location: Ignition Switch Harness
Accessory Positive Wire (+): Blue (10 Gauge)
Accessory Positive Wire Location: Ignition Switch Harness
Second Accessory Positive Wire (+): Orange
Second Accessory Positive Wire Location: Ignition Switch Harness
Parking Light Positive Wire (+): Black/Yellow
Parking Light Positive Wire Location: At Headlight Switch
Power Door Lock Positive Wire (+): Orange/Violet
Power Door Lock Positive Wire Location: In Drivers Kick Panel, White 6-Pin
Power Door Unlock Positive Wire (+): Pink/Violet
Power Door Unlock Positive Wire Location: In Drivers Kick Panel, White 12-Pin
Door Trigger Negative Wire (-): Yellow
Door Trigger Negative Wire Location: At Headlight Switch
Domelight Supervision Wire: Use Door Trigger (Requires Relay)
Domelight Supervision Wire Location: N/A
Horn Negative Wire (-): Black/Red
Horn Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): Gray
Tachometer Wire Negative Wire Location: At PCM, Connector 1, Pin A7. The PCM (powertrain control module) is located on the firewall next to the wiper motor.
Brake Light Positive Wire (+): White/Tan
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): Black/Orange (To disarm requires a (-) negative through a 1565 ohm resistor and an extra relay to connect.)
Factory Alarm Disarm Wire Location: In Drivers Kick Panel, White 12 Pin Plug
Factory Anti-Theft System: N/A
Factory Anti-Theft System Location: N/A

• Windshield Wipers Continue to Run When Turn Signal and Windshield Wiper Switch Are Turned OFF

• Damaged turn signal and windshield wiper switch .
• Damaged windshield wiper motor .
• Damaged windshield wiper control module.

Pin Number Circuit Circuit Function 1 57 (BK) Wiper Motor Ground (Park) 2 28 (BK/PK) Wiper Module to Wiper Motor (Park Switch) 3 65 (DG) Wiper Motor Power (Park Feed) 4 61 (Y/R) Wiper Motor Common (RUN) 5 56 (DB/O) Wiper Motor LO 6 58 (W) Wiper Motor HI
Windshield Wiper System The windshield wiper system consists of :

• Windshield wiper motor (17508) (F-type).
• Washer system.
• Windshield wiper control module.
• Turn signal and windshield wiper switch (13K359).

The windshield wiper control module is:

• Located at the instrument panel fuse panel.

The windshield wiper motor is:

• Attached to the cowl top extension (021A36) .
• Connected to windshield wiper mounting arm and pivot shaft (17566) .

The turn signal and windshield wiper switch features a:

• Rotary wiper switch.
• Push type washer actuator.

OFF/Low/High Speed

• Has a two-speed, permanent magnet, three brush electric windshield wiper motor .
• The windshield wiper motor has a brush rigging that permits selection of low or high speed.
• When the turn signal and windshield wiper switch is in the LO position, the common brush and the blue/orange wire brush are used, and the windshield wiper motor operates at low speed.
• When the turn signal and windshield wiper switch is in the HI position, the common brush and the white wire brush are used.
• In HI position, electric current will bypass a portion of the armature winding causing the windshield wiper motor to operate faster.
• When the turn signal and windshield wiper switch is moved to the OFF position, the windshield wiper motor will continue at low speed until the park switch outer contacts open.
• When the park switch contacts open, the windshield wiper motor stops in the park position.

Interval
When the turn signal and windshield wiper switch is in the interval position:

• The wipers make single wipes separated by pauses.
• The rotary switch is on the end of turn signal and windshield wiper switch .
• The length of the pause can be set from approximately 1 to 17 seconds.
• Length of pause decreases as the rotary switch is rotated away from off.
• Length of pause increases as the rotary switch is rotated toward off.

While in the interval wiper mode:

• It is normal to hear a slight click at the beginning of each on/pause cycle. NOTE: When using interval wipers, the first wipe may not occur until after a pause of up to 17 seconds.
  

The factory wiring connector hook-up for the Mustang is:

Radio / Power Connector:

Light Green / Yellow - Hot at all times (Fuse 8)
Yellow / Black - Hot in ACC or Run (Fuse 11)
Light Brown / Red - Goes to instrument panel dimming rheostat (Fuse 4)
Red - Ground
White / Purple - Hot in ACC or Run (Fuse 11)

Speaker Connector:

White / Light Green - (+) Right Instrument Panel & Door Speaker
Dark Green / Orange - (-) Right Instrument Panel & Door Speaker
Brown / Pink - (+) Right Rear Speaker
Pink / Light Brown - (-) Right Rear Speaker
Pink / Light Green - (+) Left Rear Speaker
Tan / Yellow - (-) Left Rear Speaker
Light Brown / White - (+) Left Instrument Panel & Door Speaker
Orange / Light Green - (-) Left Instrument Panel & Door Speaker

Your best bet is to buy a radio install kit and adapt it to the Mustang connector. Hope this information helps.