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under dash voltage regulator #1422793 04/20/13 08:29 PM 04/20/13 08:29 PM
Joined: Jul 2006 Posts: 4,179 California mickm OP master
mickm OP master Joined: Jul 2006 Posts: 4,179 California	where is this in a 70 b-body? i have a new one and want to install it to see if some gauge wierdness goes away. i looked in the FSM, and felt around a bit, but i can't find it.

Re: under dash voltage regulator [Re: mickm] #1422794 04/20/13 08:33 PM 04/20/13 08:33 PM
Joined: Mar 2003 Posts: 18,688 Fresno, CA Jim_Lusk I Live Here
Jim_Lusk I Live Here Joined: Mar 2003 Posts: 18,688 Fresno, CA	Some cars had it built into the fuel gauge. I don't know about your car.

Re: under dash voltage regulator [Re: Jim_Lusk] #1422795 04/20/13 09:35 PM 04/20/13 09:35 PM
Joined: Jan 2003 Posts: 33,168 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 33,168 Grand Prairie,Texas	I think rally gauge dash had it built into the fuel gauge and standard gauges have this. 7675913-limiter003.JPG (75 downloads)

Re: under dash voltage regulator [Re: mickm] #1422796 04/21/13 12:56 AM 04/21/13 12:56 AM
Joined: Aug 2011 Posts: 1,028 NB, Canada M moparfan53 super stock
moparfan53 super stock M Joined: Aug 2011 Posts: 1,028 NB, Canada	Quote: where is this in a 70 b-body? i have a new one and want to install it to see if some gauge wierdness goes away. i looked in the FSM, and felt around a bit, but i can't find it. Click on "Installation Manual for IVR4 Limiter" in the link below for info and pic of where it is located. http://rt-eng.com/rte/index.php/RTE_limiter

Re: under dash voltage regulator [Re: moparfan53] #1422797 04/21/13 01:19 AM 04/21/13 01:19 AM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	Back side of 70 RR dash. 7676147-Bird[Before]264backofdash.jpg (169 downloads)

Re: under dash voltage regulator [Re: thehemikid] #1422798 04/21/13 03:11 AM 04/21/13 03:11 AM
Joined: Jul 2006 Posts: 4,179 California mickm OP master
mickm OP master Joined: Jul 2006 Posts: 4,179 California	Quote: Back side of 70 RR dash. got it. should be able to grab it from there. thanks!

Re: under dash voltage regulator [Re: mickm] #1422799 04/21/13 11:26 AM 04/21/13 11:26 AM
Joined: May 2005 Posts: 583 NJ R rth mopar
rth mopar R Joined: May 2005 Posts: 583 NJ	If you can't get big fingers in there, drop steering column for room.

Re: under dash voltage regulator [Re: mickm] #1422800 04/22/13 01:35 AM 04/22/13 01:35 AM
Joined: Jul 2006 Posts: 4,179 California mickm OP master
mickm OP master Joined: Jul 2006 Posts: 4,179 California	looks like it's necessary to pull the dash panel to get to this. does it have to come all the way out? can someone give me a heads up on how to replace this?

Re: under dash voltage regulator [Re: mickm] #1422801 04/22/13 07:53 PM 04/22/13 07:53 PM
Joined: Jan 2003 Posts: 6,816 Alton, IL D Dakota_Don master
Dakota_Don master D Joined: Jan 2003 Posts: 6,816 Alton, IL	what is that thing supposed to do??

Re: under dash voltage regulator [Re: Dakota_Don] #1422802 04/22/13 10:03 PM 04/22/13 10:03 PM
Joined: Aug 2011 Posts: 1,028 NB, Canada M moparfan53 super stock
moparfan53 super stock M Joined: Aug 2011 Posts: 1,028 NB, Canada	Quote: what is that thing supposed to do?? It reduces 12v down to 5v, which is what the oil pressure, coolant temp and fuel gauge operate on.

Re: under dash voltage regulator [Re: rth] #1422803 04/23/13 12:05 AM 04/23/13 12:05 AM
Joined: Jan 2003 Posts: 5,472 So Cal Sinitro master
Sinitro master Joined: Jan 2003 Posts: 5,472 So Cal	Quote: If you can't get big fingers in there, drop steering column for room. No need to drop the column.. First disconnect the battery. Pull out the radio/panel, (4) phillips screws, release radio chassis support bracket. Now very EZ to reach inside to replace the voltage limiter/regulator... Just my $0.02...

Re: under dash voltage regulator [Re: Sinitro] #1422804 04/23/13 02:12 AM 04/23/13 02:12 AM
Joined: Jul 2006 Posts: 4,179 California mickm OP master
mickm OP master Joined: Jul 2006 Posts: 4,179 California	Quote: Quote: If you can't get big fingers in there, drop steering column for room. No need to drop the column.. First disconnect the battery. Pull out the radio/panel, (4) phillips screws, release radio chassis support bracket. Now very EZ to reach inside to replace the voltage limiter/regulator... Just my $0.02... will give it a shot and let you know how it goes!

Re: under dash voltage regulator [Re: Sinitro] #1422805 04/23/13 02:13 AM 04/23/13 02:13 AM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	Sense my drivers seat & console are conveniently out of the way at the moment, I though I'd see if I could. I could get my left hand in just right of the radio & get all the way to it, & could have removed it,... if it wasn't for a wiring harness loom right up to it. I got my right hand to the loom but it didn't want to bend enough so I let the whole idea go. Hopefully your loom is a little father to the drivers side than mine. If a person was able too get the limiter out from under the dash you might have a problem getting the little capacitor thingy plugged back in if it fell out.

Re: under dash voltage regulator [Re: thehemikid] #1422806 04/23/13 11:02 AM 04/23/13 11:02 AM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Take one apart, you'll be surprised to find no solid state items in there, just a vibrating reed contact that only passes voltage around 5/12 of the time. If you looked at the output with an oscilloscope you'd see evenly spaced spikes of 12 volts. It's sort of like a mechanical version of digital pulse width modulation. Some folks are replacing this with a voltage regulator chip from computer power supplies, as they regulate 12VDC down to 5VDC much more cleanly. R.

Re: under dash voltage regulator [Re: thehemikid] #1422807 04/23/13 01:13 PM 04/23/13 01:13 PM
Joined: Jul 2006 Posts: 4,179 California mickm OP master
mickm OP master Joined: Jul 2006 Posts: 4,179 California	Quote: Sense my drivers seat & console are conveniently out of the way at the moment, I though I'd see if I could. I could get my left hand in just right of the radio & get all the way to it, & could have removed it,... if it wasn't for a wiring harness loom right up to it. I got my right hand to the loom but it didn't want to bend enough so I let the whole idea go. Hopefully your loom is a little father to the drivers side than mine. If a person was able too get the limiter out from under the dash you might have a problem getting the little capacitor thingy plugged back in if it fell out. i felt up there again, and i think that wiring loom is in the way. i don't think that thing is coming out without pulling the panel. need a little more time to look at it, but that's the way it seems at the moment.

Re: under dash voltage regulator [Re: mickm] #1422808 04/23/13 02:59 PM 04/23/13 02:59 PM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	Quote: Quote: Sense my drivers seat & console are conveniently out of the way at the moment, I though I'd see if I could. I could get my left hand in just right of the radio & get all the way to it, & could have removed it,... if it wasn't for a wiring harness loom right up to it. I got my right hand to the loom but it didn't want to bend enough so I let the whole idea go. Hopefully your loom is a little father to the drivers side than mine. If a person was able too get the limiter out from under the dash you might have a problem getting the little capacitor thingy plugged back in if it fell out. i felt up there again, and i think that wiring loom is in the way. i don't think that thing is coming out without pulling the panel. need a little more time to look at it, but that's the way it seems at the moment. The panel coming out was the way it looked to me too. I had replaced my voltage regulator with the (new at the time) computer chipped deal a few yrs back over the solid state one,...but I can't tell ya how well it works cause my motors not in yet.

Re: under dash voltage regulator [Re: thehemikid] #1422809 04/23/13 05:28 PM 04/23/13 05:28 PM
Joined: Jan 2003 Posts: 5,472 So Cal Sinitro master
Sinitro master Joined: Jan 2003 Posts: 5,472 So Cal	Quote: Sense my drivers seat & console are conveniently out of the way at the moment, I though I'd see if I could. I could get my left hand in just right of the radio & get all the way to it, & could have removed it,... if it wasn't for a wiring harness loom right up to it. I got my right hand to the loom but it didn't want to bend enough so I let the whole idea go. Hopefully your loom is a little father to the drivers side than mine. If a person was able too get the limiter out from under the dash you might have a problem getting the little capacitor thingy plugged back in if it fell out. I have a 70RR so I know my suggestion works just fine.. Regarding the capacitor, not really required so if not there.. No biggee.. Just my $0.02...

Re: under dash voltage regulator [Re: mickm] #1422810 04/23/13 11:22 PM 04/23/13 11:22 PM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	Quote: Quote: Sense my drivers seat & console are conveniently out of the way at the moment, I though I'd see if I could. I could get my left hand in just right of the radio & get all the way to it, & could have removed it,... if it wasn't for a wiring harness loom right up to it. I got my right hand to the loom but it didn't want to bend enough so I let the whole idea go. Hopefully your loom is a little father to the drivers side than mine. If a person was able too get the limiter out from under the dash you might have a problem getting the little capacitor thingy plugged back in if it fell out. i felt up there again, and i think that wiring loom is in the way. i don't think that thing is coming out without pulling the panel. need a little more time to look at it, but that's the way it seems at the moment. Hey, mickm ...Fwiw...out in less than 3 minutes, back in, in a little over 2, from under the dash...BUT... no drivers seat & console. Edit: I grabbed the upper ground lug between my 1st finger & thumb (left hand). Pulling & wiggling it out & rolling it towards the passenger side at the same time, cause the slots are sloppy allowing a lot of movement, while pulling the loom forward with my right hand. There's enough slop that the loom may not be that big a deal, but with the seat in place, you may have to go through the radio, or.... 7680282-voltagelimiter.jpg (99 downloads) Last edited by thehemikid; 04/24/13 02:31 AM.

Re: under dash voltage regulator [Re: thehemikid] #1422811 04/24/13 02:29 PM 04/24/13 02:29 PM
Joined: Jul 2006 Posts: 4,179 California mickm OP master
mickm OP master Joined: Jul 2006 Posts: 4,179 California	the regulator is the 3 prong thingy, what is the other?

Re: under dash voltage regulator [Re: mickm] #1422812 04/24/13 03:50 PM 04/24/13 03:50 PM
Joined: Sep 2009 Posts: 1,805 ky hills thehemikid top fuel
thehemikid top fuel Joined: Sep 2009 Posts: 1,805 ky hills	That is a 9 volt battery with a LED high & low beam head attached that I've had for probably 10 yrs (give or take) that I used to see what I was doing under the dash. Expensive for its size but has been priceless to me through the yrs. I don't go anywhere without it, ...notice the warn battery surface. There is a little 2" square opening just to the passenger side of the column at the bottom of the dash that gives a perfect view of what your doing. Edit: ware safety glassed though in case you was to drop it. With the drivers seat in place one might need to be a contortionist,...never had to replace any late B-bodys before. I did replace one in a B-body Dart, but I think I just laid the dash panel forward. Also my forearms & hands are small. Your right hand & arm would need to be if everything is under the dash. The radio route sounds pretty good. Last edited by thehemikid; 04/24/13 03:56 PM.

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