Overhead computer install
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Elder User
Joined: Mar 2002
Posts: 549
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From: Huntsville, Alabama
Overhead computer install
Is it possible to install a factory overhead computer in a truck that did not come with it? I miss having a reference for fuel economy and DTE.
If not, is there a product out there that will perform this function?
If not, is there a product out there that will perform this function?
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Elder User
Joined: Mar 2002
Posts: 549
Likes: 0
From: Huntsville, Alabama
Thanks. I assume it has to tie into the ECM / PCM. Maybe tie into the OBD2? I think it needs info from the fuel gauge. Calculating mileage is easy but you have to know how much fuel you have then know current economy to get DTE.
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Postmaster
Joined: Jan 2009
Posts: 2,544
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From: Suffolk, VA
You do realize that overhead display is not known to be accurate right? Seems like a lot of work to have something that doesn't work well. And if you have a chip or programmer it's even worse. My calculator and trip odometer work pretty good though.
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Senior User
Joined: May 2006
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Do you remember where you got the mirror? Is it a pretty easy install? I saw sombody on here that turned the overhead into a gauge pod.
Elder User
Joined: Nov 2006
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From: Mission, BC
just search for GENTEX there is a lot of options on ebay
extremely easy install. i cant live without my autodim mirror....
here is a link.. this is what i have. http://cgi.ebay.com/ebaymotors/Gente...ht_3305wt_1165
you can get them with map lights built in.. but i didnt really need that feature.
im pretty sure you can get them with the back up camere hook up now, so that when you throw it in reverse its also a video monitor!
extremely easy install. i cant live without my autodim mirror....
here is a link.. this is what i have. http://cgi.ebay.com/ebaymotors/Gente...ht_3305wt_1165
you can get them with map lights built in.. but i didnt really need that feature.
im pretty sure you can get them with the back up camere hook up now, so that when you throw it in reverse its also a video monitor!
Senior User
Joined: May 2006
Posts: 147
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just search for GENTEX there is a lot of options on ebay
extremely easy install. i cant live without my autodim mirror....
here is a link.. this is what i have. Gentex Auto Compass Temperature Mirror GENK21 GENK21A - eBay (item 130459072284 end time Jan-25-11 11:07:13 PST)
you can get them with map lights built in.. but i didnt really need that feature.
im pretty sure you can get them with the back up camere hook up now, so that when you throw it in reverse its also a video monitor!
extremely easy install. i cant live without my autodim mirror....
here is a link.. this is what i have. Gentex Auto Compass Temperature Mirror GENK21 GENK21A - eBay (item 130459072284 end time Jan-25-11 11:07:13 PST)
you can get them with map lights built in.. but i didnt really need that feature.
im pretty sure you can get them with the back up camere hook up now, so that when you throw it in reverse its also a video monitor!
Posting Guru
Joined: Dec 2009
Posts: 2,265
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From: Garden City, KS
If I'm right, it's all about harnesses... there's a plug in the passenger-side kick panel. I have/had the console in my truck and I wanted to install clearance lights. It'd be all plug and play, I just had to replace the harness that goes to the console and the light harness would plug right into that. I'm almost positive all you'd have to buy would be either a harness that goes to that plug, or a harness to replace the one you have now if you've got clearance lights. Get with Ed and he'll be able to set you up... I'm not 100% sure this will work, but I'm almost positive that's how it works because that's how it is on my truck.
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Elder User
Joined: Mar 2002
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From: Huntsville, Alabama
. Yes I do realize those facts. I just want a reference. I am a data geek.
Senior User
Joined: Jul 2009
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From: Trona, CA
Buy a ScanGauge II or some other such tool (I don't know if AE/Terminator/etc have the ability to do MPG and DTE). The overhead is crap...inaccurate, and sometimes just plain breaks. The ScanGauge allows you track MPG, DTE, MAP, ATF, ICP, IPR, etc (though only 4 on the screen at once). It also splits MPG/DTE data into "this tank", "previous day", "today" (data goes to previous day after 9 hours of no data from computer) and "current trip" (resets after 3 mins of no computer data). It lets you calibrate the MPG data by allowing you to enter the amount of fuel you actually put into the tank at each fuel up, and it trims/adds to the collected data by a proportional amount. I will say though, it is not always accurate - I calibrated mine at 55mph cruise going back and forth to work, and a few in town runs, and it read 13MPG at 80MPH but actual was in 16-17 range. And it will pull codes off most cars but probably not the diesel.
http://www.scangauge.com/features/
http://www.scangauge.com/features/