Diagram titled Ignition Switch Logic with continuity tables

Ignition Switch Logic Tables '80-96
IF THE IMAGE IS TOO SMALL, click it.
The early '80-91 switch is on the LEFT; the later '92-up is on the RIGHT.

'80-91 Motorcraft SW2472
Battery - Y - 37
Accy1 - Bk/LG - 297
Accy2 - Gy/Y - 687
Ign1 - R/LG - 16
Ign2 - Br/Pk - 262
Start - R/LB or Wh/Pk - 32
Proof1 - Pu/Wh - 977
Proof2 - Bk/LB - 41

See also:
. . . .

'92-96 Motorcraft SW5011 WPT507
{ACC continuity only between A1 & B5}
B1, B2, B3, B4, B5 - Y
GND - Bk
Accy1 - Bk/LG
Accy2 - Gy/Y (connected externally to A3)
Accy3 - Gy/Y (connected externally to A2)
Accy4 - Gy/Y
Ign1 - R/LG
Ign2 - not used
Start - R/LB
Proof1 - Bk/LB (diesel)
Proof2 - T/LG

See also:
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=9231
. . . .

Owner caption October 2010 · Photo 3421 of 6546