Ford 3 Door Heater help
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Mountain Pass
Joined: Mar 2024
Posts: 149
Likes: 101
From: Pennsylvania
Ford 3 Door Heater help
I aquired a three door aftermarket heater for my truck. With it came the controls. The downside is I have four wires coming off the motor and no idea how to wire it to the switch/battery. Does anyone have a schematic?
Lead Driver
Joined: Oct 1999
Posts: 6,776
Likes: 553
From: Kalispell, MT
Can you identify the color of the wires coming from the heater? Are your motor contacts similar to the above? In the diagram it shows a red, yellow, brown and red with black tracer and their corresponding connections.
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Mountain Pass
Joined: Mar 2024
Posts: 149
Likes: 101
From: Pennsylvania
yeah all the wires look the same! Totally crazy. I will post some pictures later.
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Parts Nerd Extraordinaire
Joined: Sep 2010
Posts: 4,355
Likes: 1,775
From: Western NY
First, the wires should be colored per the diagram:
1G = First Wire, Green Color, Short Field Wire
2R = Second Wire, Red Color, Forward Brush Wire
3Y = Third Wire, Yellow Color, Long Field Wire
4Br = Forth Wire, Brown Color, Reverse Brush Wire
5RB = Fifth Wire, Red/Black Color, Fuse Box (Power)
If the colors are faded or indeterminate, the instructions go on with these 6 steps:
1. ATTACH POSITIVE BATTERY POST 6V LEAD TO ANY OF 4 HEATER MOTOR WIRES-MASKING TAPE THIS LEAD AS (GROUND) (G).
2. TOUCH NEGATIVE BATTERY POST 6V LEAD TO REMAINING (3) WIRES UNTIL SPARK OR GROUND FLASH OCCURS ISOLATE WITH TAPE MARK (FIELD) (Y).
3. THEN ATTACH NEGATIVE 6V LEAD TO EITHER OF THE (2) REMAINING WIRES - MARK (1) WIRE (FORWARD) (R), REMAINING WIRE (REVERSE) (BR).
4. TOUCH FIELD WIRE (Y) TO REMAINING WIRE REVERSE (BR) MOTORING SHOULD OCCUR IF THE MOTOR IS GOOD.
5. ROTATION, SWITCH NEGATIVE LEAD TO LAST WIRE (BR) AND TOUCH FIELD WIRE (Y) TO (FORWARD) (R) WIRE AND MOTORING SHOULD OCCUR IN OPPOSITE ROTATION.
6. LOW SPEEDS ARE CONTROLLED BY RESISTANCE WIRE COIL ON THE HEATER SWITCH.
1G = First Wire, Green Color, Short Field Wire
2R = Second Wire, Red Color, Forward Brush Wire
3Y = Third Wire, Yellow Color, Long Field Wire
4Br = Forth Wire, Brown Color, Reverse Brush Wire
5RB = Fifth Wire, Red/Black Color, Fuse Box (Power)
If the colors are faded or indeterminate, the instructions go on with these 6 steps:
1. ATTACH POSITIVE BATTERY POST 6V LEAD TO ANY OF 4 HEATER MOTOR WIRES-MASKING TAPE THIS LEAD AS (GROUND) (G).
2. TOUCH NEGATIVE BATTERY POST 6V LEAD TO REMAINING (3) WIRES UNTIL SPARK OR GROUND FLASH OCCURS ISOLATE WITH TAPE MARK (FIELD) (Y).
3. THEN ATTACH NEGATIVE 6V LEAD TO EITHER OF THE (2) REMAINING WIRES - MARK (1) WIRE (FORWARD) (R), REMAINING WIRE (REVERSE) (BR).
4. TOUCH FIELD WIRE (Y) TO REMAINING WIRE REVERSE (BR) MOTORING SHOULD OCCUR IF THE MOTOR IS GOOD.
5. ROTATION, SWITCH NEGATIVE LEAD TO LAST WIRE (BR) AND TOUCH FIELD WIRE (Y) TO (FORWARD) (R) WIRE AND MOTORING SHOULD OCCUR IN OPPOSITE ROTATION.
6. LOW SPEEDS ARE CONTROLLED BY RESISTANCE WIRE COIL ON THE HEATER SWITCH.
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Thread Starter
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Mountain Pass
Joined: Mar 2024
Posts: 149
Likes: 101
From: Pennsylvania
First, the wires should be colored per the diagram:
1G = First Wire, Green Color, Short Field Wire
2R = Second Wire, Red Color, Forward Brush Wire
3Y = Third Wire, Yellow Color, Long Field Wire
4Br = Forth Wire, Brown Color, Reverse Brush Wire
5RB = Fifth Wire, Red/Black Color, Fuse Box (Power)
If the colors are faded or indeterminate, the instructions go on with these 6 steps:
1. ATTACH POSITIVE BATTERY POST 6V LEAD TO ANY OF 4 HEATER MOTOR WIRES-MASKING TAPE THIS LEAD AS (GROUND) (G).
2. TOUCH NEGATIVE BATTERY POST 6V LEAD TO REMAINING (3) WIRES UNTIL SPARK OR GROUND FLASH OCCURS ISOLATE WITH TAPE MARK (FIELD) (Y).
3. THEN ATTACH NEGATIVE 6V LEAD TO EITHER OF THE (2) REMAINING WIRES - MARK (1) WIRE (FORWARD) (R), REMAINING WIRE (REVERSE) (BR).
4. TOUCH FIELD WIRE (Y) TO REMAINING WIRE REVERSE (BR) MOTORING SHOULD OCCUR IF THE MOTOR IS GOOD.
5. ROTATION, SWITCH NEGATIVE LEAD TO LAST WIRE (BR) AND TOUCH FIELD WIRE (Y) TO (FORWARD) (R) WIRE AND MOTORING SHOULD OCCUR IN OPPOSITE ROTATION.
6. LOW SPEEDS ARE CONTROLLED BY RESISTANCE WIRE COIL ON THE HEATER SWITCH.
1G = First Wire, Green Color, Short Field Wire
2R = Second Wire, Red Color, Forward Brush Wire
3Y = Third Wire, Yellow Color, Long Field Wire
4Br = Forth Wire, Brown Color, Reverse Brush Wire
5RB = Fifth Wire, Red/Black Color, Fuse Box (Power)
If the colors are faded or indeterminate, the instructions go on with these 6 steps:
1. ATTACH POSITIVE BATTERY POST 6V LEAD TO ANY OF 4 HEATER MOTOR WIRES-MASKING TAPE THIS LEAD AS (GROUND) (G).
2. TOUCH NEGATIVE BATTERY POST 6V LEAD TO REMAINING (3) WIRES UNTIL SPARK OR GROUND FLASH OCCURS ISOLATE WITH TAPE MARK (FIELD) (Y).
3. THEN ATTACH NEGATIVE 6V LEAD TO EITHER OF THE (2) REMAINING WIRES - MARK (1) WIRE (FORWARD) (R), REMAINING WIRE (REVERSE) (BR).
4. TOUCH FIELD WIRE (Y) TO REMAINING WIRE REVERSE (BR) MOTORING SHOULD OCCUR IF THE MOTOR IS GOOD.
5. ROTATION, SWITCH NEGATIVE LEAD TO LAST WIRE (BR) AND TOUCH FIELD WIRE (Y) TO (FORWARD) (R) WIRE AND MOTORING SHOULD OCCUR IN OPPOSITE ROTATION.
6. LOW SPEEDS ARE CONTROLLED BY RESISTANCE WIRE COIL ON THE HEATER SWITCH.
Thread Starter
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Mountain Pass
Joined: Mar 2024
Posts: 149
Likes: 101
From: Pennsylvania
I do have another curiosity question. I see they say this heater has a reversible motor….what would be the benefit of that? What could that allow the heater to do different?
Logistics Pro
Joined: Jun 2011
Posts: 4,995
Likes: 422
From: u-rah-rah Wisconsin
The motor reverses for defrost mode.
Thread Starter
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Mountain Pass
Joined: Mar 2024
Posts: 149
Likes: 101
From: Pennsylvania
First, the wires should be colored per the diagram:
1G = First Wire, Green Color, Short Field Wire
2R = Second Wire, Red Color, Forward Brush Wire
3Y = Third Wire, Yellow Color, Long Field Wire
4Br = Forth Wire, Brown Color, Reverse Brush Wire
5RB = Fifth Wire, Red/Black Color, Fuse Box (Power)
If the colors are faded or indeterminate, the instructions go on with these 6 steps:
1. ATTACH POSITIVE BATTERY POST 6V LEAD TO ANY OF 4 HEATER MOTOR WIRES-MASKING TAPE THIS LEAD AS (GROUND) (G).
2. TOUCH NEGATIVE BATTERY POST 6V LEAD TO REMAINING (3) WIRES UNTIL SPARK OR GROUND FLASH OCCURS ISOLATE WITH TAPE MARK (FIELD) (Y).
3. THEN ATTACH NEGATIVE 6V LEAD TO EITHER OF THE (2) REMAINING WIRES - MARK (1) WIRE (FORWARD) (R), REMAINING WIRE (REVERSE) (BR).
4. TOUCH FIELD WIRE (Y) TO REMAINING WIRE REVERSE (BR) MOTORING SHOULD OCCUR IF THE MOTOR IS GOOD.
5. ROTATION, SWITCH NEGATIVE LEAD TO LAST WIRE (BR) AND TOUCH FIELD WIRE (Y) TO (FORWARD) (R) WIRE AND MOTORING SHOULD OCCUR IN OPPOSITE ROTATION.
6. LOW SPEEDS ARE CONTROLLED BY RESISTANCE WIRE COIL ON THE HEATER SWITCH.
1G = First Wire, Green Color, Short Field Wire
2R = Second Wire, Red Color, Forward Brush Wire
3Y = Third Wire, Yellow Color, Long Field Wire
4Br = Forth Wire, Brown Color, Reverse Brush Wire
5RB = Fifth Wire, Red/Black Color, Fuse Box (Power)
If the colors are faded or indeterminate, the instructions go on with these 6 steps:
1. ATTACH POSITIVE BATTERY POST 6V LEAD TO ANY OF 4 HEATER MOTOR WIRES-MASKING TAPE THIS LEAD AS (GROUND) (G).
2. TOUCH NEGATIVE BATTERY POST 6V LEAD TO REMAINING (3) WIRES UNTIL SPARK OR GROUND FLASH OCCURS ISOLATE WITH TAPE MARK (FIELD) (Y).
3. THEN ATTACH NEGATIVE 6V LEAD TO EITHER OF THE (2) REMAINING WIRES - MARK (1) WIRE (FORWARD) (R), REMAINING WIRE (REVERSE) (BR).
4. TOUCH FIELD WIRE (Y) TO REMAINING WIRE REVERSE (BR) MOTORING SHOULD OCCUR IF THE MOTOR IS GOOD.
5. ROTATION, SWITCH NEGATIVE LEAD TO LAST WIRE (BR) AND TOUCH FIELD WIRE (Y) TO (FORWARD) (R) WIRE AND MOTORING SHOULD OCCUR IN OPPOSITE ROTATION.
6. LOW SPEEDS ARE CONTROLLED BY RESISTANCE WIRE COIL ON THE HEATER SWITCH.
Thanks again!
Thread Starter
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Mountain Pass
Joined: Mar 2024
Posts: 149
Likes: 101
From: Pennsylvania
Agreed just trying to see if someone knew so I wouldn’t have to redo wiring if I guessed wrong.
