EEC Power Relays
Ford Standard was replaced in F-series & Broncos in 1992 by ISO (International Standards Organization)/Bosch (now owned by Tyco).
The Ford EEC PWR relay connects pin 4 (B ) to pin 3 (load) when the coil is energized by pin 2 (trigger positive) having ~ 9~ 16V relative to pin 1 (trigger ground).
The ISO relay switches pin 30 (input) between pin 87a (NC; when the trigger coil is NOT energized) and pin 87 (NO; when energized) when there is ~9~16V difference between pins 85 (typically the lower voltage/ground) and 86 (typically the higher voltage/B ).
Most wiring diagrams are available free here:
http://www.bbbind.com/free_tsb.htmlThe required e-mail is not checked, so it doesn't have to be yours or real. Click the red WIRING DIAGRAMS button when you see it.
See also:
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![eec_pwr_relays.jpg EEC Power Relays
Ford Standard was replaced in F-series & Broncos in 1992 by ISO (International Standards Organization)/Bosch (now owned by Tyco).
The Ford EEC PWR relay connects pin 4 (B ) to pin 3 (load) when the coil is energized by pin 2 (trigger positive) having ~ 9~ 16V relative to pin 1 (trigger ground).
The ISO relay switches pin 30 (input) between pin 87a (NC; when the trigger coil is NOT energized) and pin 87 (NO; when energized) when there is ~9~16V difference between pins 85 (typically the lower voltage/ground) and 86 (typically the higher voltage/B ).
Most wiring diagrams are available free here:
http://www.bbbind.com/free_tsb.html
The required e-mail is not checked, so it doesn't have to be yours or real. Click the red WIRING DIAGRAMS button when you see it.
See also:
[url=https://www.supermotors.net/registry/media/507187][img]https://www.supermotors.net/getfile/507187/thumbnail/relays1.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/1126824][img]https://www.supermotors.net/getfile/1126824/thumbnail/fueltanksfgas.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/862996][img]https://www.supermotors.net/getfile/862996/thumbnail/dlcjumper.jpg[/img][/url]](https://www.supermotors.net/getfile/1122758/fullsize/eec_pwr_relays.jpg)