battery light

That doesnt mean the bulb is out. That circuit is completed through the alternator. When they go out, the battery light doesnt necessarily come on. Trust me on that one. My first one died and I only had the stock gauge to go by. Got back to my dealership and tested it, output was 12.9V. Light was off. I thought the same thing about the bulb as it never proved out. Replaced the alternator, light proved out normally. Then my second one went at the Fun Ford Weekend in NH. Same thing, no light on, only this time I had Autometer gauges to clue me that I wasnt charging. Light was off the whole time.

Id say the most likely suspect, assuming your rewiring is correct, is that the alternator is bad. Bring it to a store and get it tested to know for certain. If your wiring is up to snuff, then thats more than likely where the problem lies.

Yeah if the alternator tests good and the fuse is good, its more than likely a wiring issue. Id post up some better wiring diagrams directly from the Ford OASIS site but I changed my password last week and now cant log back in because I forgot it . Id very carefully go over any of the alterations you made and double check them, if not returning them to stock if need be. Good luck.

The stock excite circuit uses a 500 ohm resistor in parallel with the bulb just in case the bulb burns out.

Check for voltage at the excite wire on your regulator. YOu should see one to several volts.

The battery light will not illuminate if you unplug the regulator plug. The reg is what grounds the light.


Be sure you didnt blow the fuse for the new charge cable, and that all charge cable connections are solid.

Good luck.