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Old 02-19-2011, 04:47 PM
96ranger941 96ranger941 is offline
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Default Doing some custom 'mod' need wiring advice

Ok guys my first 'tech question' post. To explain the whole thing I'm gonna go in depth some, so bear with me. I'm sure a lot of you have manuals that are in the 93-98 years, where if it had been a automatic, the dash would have p r d etc on it underneath the tach and speedo well we with manual have that empty black space. Me, I've always wanted a digital thermometer to tell me the temps outside and such and saw one at advanced auto that was the same size screen wise, now since I have an extra dash inside my home I've been tinkering with that this afternoon and it fits in nicely no problem.

My issue is the wiring. The sensor is dead easy not worried about that, my thing is the power source as it currently runs off a AAA battery, I know I need to wire it up with a fuse for safety and to not kill the lcd screen but to what size fuse would you recommend as I'd like to put it in the fuse block next to the drivers door for ease of replacing should I have to. The other thing this little guy does is have a clock that is shown at the same time on the screen, and this is were it gets tricky too as if it was just the temp, I'd just wire it up to the smallest fuse I could and not worry.

What I would *like* to do is set it up so A) doesn't kill the battery and B) keeps the time in memory (by being wired up to the fuse block) like I know some things setup for the ignition and others do direct power.. if it helps I'll get some pictures of it, again it'll be coming out of its current shell and going into the dash itself were that gear selector indicator would be if it was a auto. as for the buttons for setting time, I already have that figured out meaning I'll solder some nice little wires up to it and make extended buttons under the dash for resetting the time come daylight savings. Any thoughts? And I know it's a lot to ask in my first support question but I do appreciate it and heck when it is all done and said with may make a nice how to for others cause it is a neat feature having a temp in the dash looking oem I think.

EDIT: the fuse block has empty mini fuse locations so I would be using one dedicated to it that has nothing else of course.
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Updated Dash
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Last edited by 96ranger941; 02-19-2011 at 09:36 PM.
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Old 02-19-2011, 04:57 PM
turbo turbo is offline
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Default Re: Doing some custom 'mod' need wiring advice

whew. okay...

1) There is a key labelled "Enter" on your keyboard; use it. More often.

2) The size of a fuse in a circuit does not control the voltage delivered to a circuit. it is designed to fail if current in the circuit goes above a specific threshold.

3) One AAA battery delivers 1.5V DC. Your vehicle's electrical system delivers 13.8V DC.

If you're dead-set on using this specific thermometer in your truck, you're going to need to do a bit more engineering; specifcally, electrical engineering. You'll need to build or buy a DC-to-DC converter or voltage regulator circuit that will take the 13.8V vehicle power and provide the 1.5V your thermometer requires.

4) It would be far easier for you to attempt the OHC mod, chronicled elsewhere (and numerous times) on this forum and others. That device, scavenged from the interior of a Ford Explorer or Mercury Mountaineer, contains an electronic compass and a digital thermometer.
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2001 Ranger XLT 4.0L SOHC
Silver Frost w/ Dark Graphite interior


Modifications
Summit 3" Body Lift
31x10.50 A/T tires
Explorer overhead console
Explorer auto-dim mirror
Explorer auto-headlights
Aux1 & Aux2 inputs on factory AM/FM/CD/Cassette
Door-dinger silencer button
Seamless retractable roof and passenger-side ejection seat with steering wheel mounted controls and safety interlock

Last edited by turbo; 02-19-2011 at 05:25 PM.
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Old 02-19-2011, 05:06 PM
FireRanger FireRanger is offline
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Default Re: Doing some custom 'mod' need wiring advice

^^ What he said.
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Old 02-19-2011, 09:24 PM
littleblue littleblue is offline
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Default Re: Doing some custom 'mod' need wiring advice

If you're wiring up the buttons why not extend the battery leads too. If you need a battery holder you can buy those at radio shack. Find a convenient place under the dash for easy access for changing the battery when needed. Also use a lithium ion AAA battery and it should last you quite a while.
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Old 02-19-2011, 09:42 PM
96ranger941 96ranger941 is offline
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Default Re: Doing some custom 'mod' need wiring advice

Turbo--

I found the following last weekend:

http://www.fordrangerforum.com/inter...e-install.html

and

http://www.fordrangerforum.com/inter...gers-96-a.html

and while it was good information I seem to keep missing where the temp sensor and I guess the compass 'sensor'(?) was at otherwise I'd probably go ahead and try that out as it in all honesty would probably be a ton easier, that and finding one in a j.y. around here is rather tough but hey thats what j.y. days are for right?

Actually,

I think I'd rather do that just because install wise, the hard work is already done as far as making it work, it's more of just install.
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1996 Ranger 2.3 5 speed single cab
Bed Liner interior
Updated Dash
Future:
New seats, new bed and new paint job.
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Old 02-19-2011, 09:51 PM
turbo turbo is offline
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Default Re: Doing some custom 'mod' need wiring advice

Barrett -

The installation, as you've found, is straightforward. The temperature sensor is located on the driver's side radiator support in the front of the Explorer/Mountaineer. You can mount it in the same location on your Ranger. Don't worry about pulling or otherwise obtaining that portion of the wiring harness -- any two conductor wire is sufficient for that purpose, and it doesn't matter which sensor wire attaches to which side of the sensor wiring on the OHC.

The compass module is completely self-contained within the OHC; there is no external sensor or connection necessary for it to function. Simply power it up, and it starts working. There is a calibration/configuration routine built into the OHC; links to the instructions for that should be in one or both of the threads you referenced.

This forum, as well as other Ranger-related forums online, has a 'Classified Ad' section -- there are often folks that have done the JY trip and already scavenged the necessary pieces. If you don't find a current listing of one for sale, just post a "wanted" ad there and you'll get responses. Another (usually more expensive) option is to scan Ebay for an OHC and sensor... you need the OHC, the temp sensor, the OHC mounting bracket, and some form of wiring harness. If the one you find does not have a wiring harness, you can easily create one, as long as you have the OHC connector (with a few inches of wire attached) that will work.
__________________
2001 Ranger XLT 4.0L SOHC
Silver Frost w/ Dark Graphite interior


Modifications
Summit 3" Body Lift
31x10.50 A/T tires
Explorer overhead console
Explorer auto-dim mirror
Explorer auto-headlights
Aux1 & Aux2 inputs on factory AM/FM/CD/Cassette
Door-dinger silencer button
Seamless retractable roof and passenger-side ejection seat with steering wheel mounted controls and safety interlock

Last edited by turbo; 02-19-2011 at 09:54 PM.
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  #7  
Old 02-19-2011, 10:16 PM
zx6rrdan zx6rrdan is offline
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Default Re: Doing some custom 'mod' need wiring advice

If your looking for another option I went with a mirror with the exterior temp built into it.

If your still interested in the other idea in dash post up. You can either use resistors or even easier a voltage line regulator can be bought at any electrical component store for cheap.
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Last edited by zx6rrdan; 02-19-2011 at 10:27 PM.
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