Auto Darkening Rear Veiw mirror problems need help???? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 08-17-2009
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Auto Darkening Rear Veiw mirror problems need help????

well i just installed my mirror but i wired it a while ago. i followed the instrustions and everything for the wiring and have it right but something may have come loss. because its not working right. is there was way to test the plug to make sure its getting power. or something like that.
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Old 08-17-2009
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Check the connections if you think something came loose. Also trace the wires back to the plug and use a multi-meter to check and make sure you have you have power to the mirror and that your ground is grounded. I know that with my mirror if I move the slider to the right to cut the auto-headlamps on the green light will come on. If yours is like mine that would proally be the easiest way to check for power and ground.
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Old 08-17-2009
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Digital Multi-Meter? (DMM)
just buy one at walmart and return it if u don't need to own one lol i have two of them though haha

Last edited by 99offroadrngr; 08-17-2009 at 11:22 PM.
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Old 08-17-2009
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Quote:
Originally Posted by 99offroadrngr View Post
Digital Multi-Meter? (DMM)
just buy one at walmart and return it if u don't need to own one lol i have two of them though haha
That is where I got mine at. A whole whopping $25 dollars.
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Old 08-18-2009
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And a DMM saved my *** figuring out my electrical issues with my new engine. It's worth it's weight in gold.
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Old 08-18-2009
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Quote:
Originally Posted by 99offroadrngr View Post
Digital Multi-Meter? (DMM)
just buy one at walmart and return it if u don't need to own one lol i have two of them though haha
Dont return it. Youll find a million uses for it. I got mine at sears for $10 on sale. I use it all the time.
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Old 08-18-2009
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the DMM is only good if the user knows how to use it though. I dont know how many times Ive had to show my buddies how to use one.
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Old 08-18-2009
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i have one a nice one lol so there is a green light on it when it tells me its on?
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Old 08-18-2009
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When the green light is on it means that your auto-headlight are on. For the green light to come on the mirror needs a switched power and ground source. So if the green light comes on then the mirror is wired correct and the sensors in the mirror its self is broke and you need a new one. I don't have the auto-headlight feature hooked up so I keep mine off all the time.
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Old 08-18-2009
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The only wires that need to be connected for the auto-dimming mirror to function are the accessory (key on) power and ground connections. The rest of the wires (if any) are necessary for the auto-headlamps feature (if your mirror has that feature).

In your initial message, you indicated that you checked the wiring and it was right; if that's the case, then the auto-dimming function in your mirror is broken, or you didn't check your wiring carefully enough.

Using your DMM, connect the black (ground) lead to the ground wire going to the mirror, and connect the red (+) lead to the accessory power (I think it's orange/green) wire going to the mirror, and turn your ignition key to the "Run" position. Your DMM should read approximately 13.8 volts if that circuit is wired correctly. If it doesn't, then there's a wiring problem.
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Old 08-18-2009
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alright man thanks im going out to look at it right now
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