Need help with fuse box issue...

[ddlopes]

I'm in the process of reinstalling my Snow Performance meth kit and ran into a problem getting 12v key on power from the fuse box. In the past I used fuse #50 (15amp) for the heated mirrors. But today it wouldn't power up the Snow Performance controller. I checked the fuse and it appeared to be fine but, I replaced it to be on the safe side. Unfortunately the controller still wouldn't power up. So I connected it to fuse #70 and the controller power right up. So then I took my multi meter and tested the #50 fuse by placing the black wire from the multi meter onto the negative side of the battery and the red wire to the fuse. This test yielded zero volts. I then tested several other fuses and all were 14.3 volts. Anyone ever have this issue or know what should be my next step. Thanks for your time.

 

[ZSHO]

Is the Spade terminal in slot 50 intact inside the BJB ? If not probably need a new Terminal Kit similar to the one below. Z

https://www.amazon.com/Motorcraft-WT56872-Terminal-Kit/dp/B01KHL14T2/ref=pd_cp_263_1/144-6882494-4835359?_encoding=UTF8&pd_rd_i=B01KHL14T2&pd_rd_r=93e4ef04-a7e3-407b-9e71-1b83f0424d4f&pd_rd_w=475cr&pd_rd_wg=vpqzC&pf_rd_p=ef4dc990-a9ca-4945-ae0b-f8d549198ed6&pf_rd_r=X8KYDYMX39D966PNSDGM&psc=1&refRID=X8KYDYMX39D966PNSDGM

 

[SHOdded]

Not quite understanding how you tested the #50 fuse with the multimeter/battery test.  Did you use the rear defroster today?

 

[ddlopes]

Is the Spade terminal in slot 50 intact inside the BJB ? If not probably need a new Terminal Kit similar to the one below. Z

Thanks Z I'm going to check that. I'm also going to pull out the fuse and check the fuse box terminals for location #50 to see if there is power there.

https://www.amazon.com/Motorcraft-WT56872-Terminal-Kit/dp/B01KHL14T2/ref=pd_cp_263_1/144-6882494-4835359?_encoding=UTF8&pd_rd_i=B01KHL14T2&pd_rd_r=93e4ef04-a7e3-407b-9e71-1b83f0424d4f&pd_rd_w=475cr&pd_rd_wg=vpqzC&pf_rd_p=ef4dc990-a9ca-4945-ae0b-f8d549198ed6&pf_rd_r=X8KYDYMX39D966PNSDGM&psc=1&refRID=X8KYDYMX39D966PNSDGM

 

[ddlopes]

Not quite understanding how you tested the #50 fuse with the multimeter/battery test.  Did you use the rear defroster today?

Thanks for the heads up. I edited the sentence. I meant to say " take the red wire and place it on the fuse". And no I haven't used the rear defroster. Although when I hit the button for the rear defroster it does light up. 

 

[ddlopes]

Does anyone know if the #50 fuse runs off a relay? And if so which relay? I'm really hoping Ford didn't pinch a wire when they replaced the engine recently.

 

[SHOdded]

Well, I suppose you could say it goes thru the rear window defrost relay/ F26 to get to ground.

 

[ddlopes]

Well, I suppose you could say it goes thru the rear window defrost relay/ F26 to get to ground.

Thank you very much!!!! I need to get the service manual download...

 

[ddlopes]

So it looks like I was mistaken thinking I previously powered my Snow Performance controller with fuse #50. Reason being this fuse apparently only has power when the rear defroster is on. I'm assuming power is only available at fuse #50 when the switch for the rear defrost is on which closes the relay #11 allowing power to fuse #50. So now I'm using the rain sensor fuse without any issues. Thanks again for all the help with this issue.

 

[SHOdded]

ok cool