Need some help with my 2nd OEM fog switch - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 08-21-2008
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Need some help with my 2nd OEM fog switch

So the relay went out for the 2nd OEM switch I have on my dash for my PIAA's...

And the relay I used wasn't a conventional relay with the prongs on the bottom. It came attached with a pigtail that doesn't come off..

So I need help re-wiring it. I know someone told me before when I first set it up that it's a double grounded switch...

Off the switch I have 2 wires that run out to the engine bay that go to the relay. What do they go to on a regular 4-prong relay?

Need a pin-by-pin instruction on how that sets up..

Thanks guys!
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Old 08-21-2008
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I stole this from Bob (rwenzing). It's how I wired mine, and it works flawlessly.

OEM switch:
pin 1 unused
pin 2 unused
pin 3 LB/BK from relay coil to switch contacts
pin 4 BK chassis ground
pin 5 LB/RD Night illumination power
pin 6 TN/OR Hot from foglamp power wire for "ON" LED


Relay:
pin 30- to fused 12v constant
pin 85- to pin 3 on OEM switch
pin 86- to switched 12v (keyed, headlights, etc)
pin 87- to aux lights (also tap in a 5amp fused line to pin 6 on the OEM switch


I have a diagram Bob gave me, but I can't post it here. If you still have problems, PM me your email, and I'll send it to you.
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Old 08-21-2008
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Here ya go:

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Old 08-21-2008
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YEP !!!!!! That's the diagram.
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Old 08-21-2008
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Yeah Tre and I spent 10 minutes hunting for it and then I posted it and as soon as I did you did too haha.
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Old 08-21-2008
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Turned out it was just a fuse. ****. lol Oh well, gave me a chance to re-wire the setup I had in there and seal it up nice and tight like!

Now here's my question. With that setup, double grounded switch, how will I get that LED to indicate it's on? the indicator works, I tried both harnesses on both switches and it seems when I have the harness on that goes to the relay for the PIAA's the light doesn't light up. But does when I hook up the harness for my HID's... (When the HID harness is on the upper switch for the PIAA's the light works, and when the harness for the PIAA's is on the HID switch the indicator doesn't light).

Anyone know what is going on?
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Old 08-21-2008
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Tap pin 6 to the wire coming off of pin 87 on the relay.
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Old 08-21-2008
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Connect switch pin 6 to whatever wire goes 12V to power the lamps. You will need the 5 amp inline fuse to protect the smaller gauge wire leading to the indicator LED.
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Old 08-21-2008
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Yeah thats what I told him to do, it still won't light up though. He's working on it now.
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Old 08-22-2008
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Well I followed the diagram... Off pin 87 on the realy are two wires, one going to the lights and one that's fused going to the tan wire on the switch. Is that wrong?
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Old 08-22-2008
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No thats right, does it still not work? On my truck pin 6 is the TN/OG wire.
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Old 08-22-2008
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That's how I have it hooked up when I asked the question... Still, not working. The lights that light up the switch work, the lights themselves work, but no indicator light... But the light works, just not on the setup... I'm stumped lol
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Old 08-22-2008
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That is to f'in weird. I'm stumped
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