OHC wiring - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 05-14-2005
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OHC wiring

where is the speed sensor wire?
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Old 05-14-2005
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go to Johns cardomain i think he has it on there Alon...
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Old 05-14-2005
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i've been using that and its not on there....... at least i cant find it
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Old 05-14-2005
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you need to know the wire color on OHC or where it is located on the truck?
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Old 05-14-2005
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where its located onthe truck
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Old 05-14-2005
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VSS? It's the grey wire in the GEM module behind the radio. I believe Grey with a Red/Maroon stripe.
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Old 05-14-2005
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Gray/black at the GEM to the left of the radio.

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Old 05-14-2005
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And that is from the bottom of my cardomain page on the wiring. Are you ADD like me, Alon, lol? You have to read the ENTIRE page!
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Old 05-14-2005
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I told gim Grey/Maroon...oops. I was close for not even SEEING a Ranger for over a year!
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Old 05-14-2005
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I had to tap mine by the parking brake as it came from the firewall . . . mine an '04 though
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Old 05-14-2005
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Sadly, I have not technical data on '03 and up Rangers -- a situation I need to rectify! I have service manuals for everything from 1992 to 2002 though.
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Old 05-14-2005
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jeese, my friend and i both read your cardomain a few times and totally missed it........


thanks john!
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Old 05-14-2005
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now that everything is wired up, when i dim the interior lights the console gets brighter and when the interior lights are supposed to be fully bright, the ohc gets dim...... john...help me!!!!!!!!!!!
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Old 05-14-2005
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Recheck your wiring is all I can say. Question: what does the console do when the lights are off?
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Old 05-14-2005
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Quote:
Originally Posted by Alon
now that everything is wired up, when i dim the interior lights the console gets brighter and when the interior lights are supposed to be fully bright, the ohc gets dim...... john...help me!!!!!!!!!!!
Mine does the same thing, Alon. The Explorer uses a completely different style of dimming module from the one in the Ranger. It is more a more sophisticated unit and I plan to get one for my Ranger to hopefully correct this.
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Old 05-14-2005
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Bob, what is the difference that would cause it to work like that? This is the first I've heard of this problem. What year explorer consoles are affected, if you have that info?
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Old 05-14-2005
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Quote:
Originally Posted by n3elz
Bob, what is the difference that would cause it to work like that? This is the first I've heard of this problem. What year explorer consoles are affected, if you have that info?
Don't know what year mine is but it's green, so 98~2001. The Explorer dimming unit is pulse width modulated but the Ranger looks like a variable resistor. I'm not sure how the electronics interact between the two, just that my 99 Explorer book shows the different diming module from anything in the Ranger books.
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Old 05-14-2005
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Well, on some explorers there are two illumination lines. One of them is red/black and I know on one console I had that setup and only the red/black wire worked for the illumination -- I think. I don't remember. It could be that one line supplies power, and the other line is "ground", but PWM modulated. If so, grounding the PWM line, and supplying power from the resistive dimmer to the other line would solve the problem. Did you end up with any "extra" wires on your setup?

Although, since the unit is electronic, it may not see the other line, and respond only to the dimmer line, don't know. I'm going to have to research it a bit, I guess.

I've installed some 98-2001 consoles and this problem hasn't cropped up. I'm real curious as to what there is about your units that are different and exactly what dates they are from. A PWM dimmer and resistive one should work the same -- but obviously SOMETHINGS up with this system.
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Old 06-14-2005
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Well, I just bought a 1998 ohc, so I guess I'll be the guinne pig.
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