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pxl_20210516_214536125.jpg Since the Bronco doesn't have a true RUN/START circuit from the factory, we created one with a bridge rectifier and a relay.  Two individual diodes would work instead but the bridge is easy to mount.  The diodes keep the RUN circuit from activating the START circuit and vice versa.  The only thing that needs RUN/START power is the Red/Lt Grn wire that feeds the PCM relay in the fuse box and the ignition coils via C115.
pxl_20210516_214536125.jpg | Hits: 248 | Posted on: 5/18/21 | View original size (2.56 MB)

Since the Bronco doesn't have a true RUN/START circuit from the factory, we created one with a bridge rectifier and a relay. Two individual diodes would work instead but the bridge is easy to mount. The diodes keep the RUN circuit from activating the START circuit and vice versa. The only thing that needs RUN/START power is the Red/Lt Grn wire that feeds the PCM relay in the fuse box and the ignition coils via C115.