Converting 1969 car to 1970+ Electronic Voltage Reg?

Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/27/09 11:25 PM

How do you convert a mopar with a 1969-down engine wiring harness to a 1970+ electronic voltage regulator (i.e. this one: http://www.summitracing.com/parts/DCC-4529794/)
What is the field and ground wire connection on this regulator?

Also, I am having issues with proper voltage regulation, even with a brand new regulator installed. The alternator is constantly putting out around 14+ volts. What should I troubleshoot to fix this?

Thanks for the help!

Posted By: OzHemi

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/27/09 11:29 PM

From the tech archives...simple to wire it up, just grab a plug for the new style regulator

Posted By: Pentastar440

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/27/09 11:30 PM

Here's the wiring diagram :

Attached picture 5692816-21.gif

Posted By: OzHemi

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/27/09 11:31 PM

Oh, and 14 volts is just fine... 13.8 - 14.4 is what you want to see from memory.

Posted By: RapidRobert

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 12:13 AM

Quote:

I am having issues with proper voltage regulation, even with a brand new regulator installed. The alternator is constantly putting out around 14+ volts. What should I troubleshoot to fix this?

Starting w the battery & working outward from both terminals I'd check the voltage drops on ALL of your connections at a fast idle w accessories on. Some of those connections have not been disturbed for 4 decades & most likely are in need of cleaning.

Posted By: 68Cbarge

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 12:25 AM

There is another alternative..Thanks to E-Booger.
Go to Autozone,get a 25.00 VR704 electronic voltage regulator...

Pop off both the new and old covers from the regulators....

Install the oldd cover over the new regulator and with no wire cutting-no alternator swapping,just install back into its stock location and enjoy modern techno;ogy and still look factory stock..

Posted By: Andrewh

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 12:29 AM

I agree, there is no reason to go with the newer type when they make an electronic 1 field wire one.

Also I agree 14.5 is fine.
Make sure it holds around that when you rev the engine up as well, and you are good to go.

If it goes higher, then start tracing back the sensing line to see where your voltage drop is, or make sure the vr is grounded.
But otherwise it sounds like it is working fine.

Posted By: dave571

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 01:56 AM

Quote:

How do you convert a mopar with a 1969-down engine wiring harness to a 1970+ electronic voltage regulator (i.e. this one: http://www.summitracing.com/parts/DCC-4529794/)
What is the field and ground wire connection on this regulator?

Also, I am having issues with proper voltage regulation, even with a brand new regulator installed. The alternator is constantly putting out around 14+ volts. What should I troubleshoot to fix this?

Thanks for the help!

As said 14 plus is fine. No real need to worry till you get into the 15's.

Most likely cause of an overcharge(if there was one present, which it doesn't seem there is) is a voltage drop in the wire on IGN lead to the voltage reg. I have seen this wire show only 12.5 volts when the battery was over 15. Regulator thinks there is not enough charge, so it gives the alternator more field current. More amperage is the result, so up goes the voltage.

Here's some random info on the dual field myth No need to wire in the newer style regulator

Posted By: 67Satty

Re: Converting 1969 car to 1970+ Electronic Voltage Reg - 12/28/09 02:18 AM

Quote:

There is another alternative..Thanks to E-Booger.
Go to Autozone,get a 25.00 VR704 electronic voltage regulator...

Pop off both the new and old covers from the regulators....

Install the oldd cover over the new regulator and with no wire cutting-no alternator swapping,just install back into its stock location and enjoy modern techno;ogy and still look factory stock..

I've got something like this from FBO when converting my '67 Satellite to pointless and dual feed alternator. Does that mean I can just plug it in like stock and not have to run and splice a wire from one of the feeds on the alternator back to the voltage regulator with this kind?

Posted By: RapidRobert

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 02:19 AM

Quote:

they make an electronic 1 field wire one.

And with that regulator anytime in the future if you upgrade to a later higher amp common 2 field terminal alt you can easily ground one of the alt field terminals to the alt case w several inches of wire & 2 crimp on terminals.

Posted By: Andrewh

Re: Converting 1969 car to 1970+ Electronic Voltage Reg - 12/28/09 04:20 AM

Quote:

Quote:

T

I've got something like this from FBO when converting my '67 Satellite to pointless and dual feed alternator. Does that mean I can just plug it in like stock and not have to run and splice a wire from one of the feeds on the alternator back to the voltage regulator with this kind?

you are going to have to try again. that didn't make sense. Either you have a duel field alt or you don't.
The pictured vr is the single field.

Posted By: RapidRobert

Re: Converting 1969 car to 1970+ Electronic Voltage Reg - 12/28/09 04:53 AM

Quote:

I've got something like this from FBO when converting my '67 Satellite to pointless and dual feed alternator. Does that mean I can just plug it in like stock and not have to run and splice a wire from one of the feeds on the alternator back to the voltage regulator with this kind?

yes plug it in like stock & ground one of the alt male field terminals to ground in your 2 field terminal alt. The one in the Summitt pic functions identical (electronic) but it's a '70 up flat case style and is NOT needed but yes that one would require you to run the 2nd alt field terminal (thats currently grounded) back to the right hand side terminal in the VR triangle per the diagram earlier in this thread

Posted By: NachoRT74

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 05:44 PM

I made an upgrade diagram based on that:

Attached picture 5693976-latealtconversion1.jpg

Posted By: NachoRT74

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 05:47 PM

or if you preffers this view

Attached picture 5693982-laterschargsys..jpg

Posted By: NachoRT74

Re: Converting 1969 car to 1970+ Electronic Voltage Reg? - 12/28/09 05:49 PM

then, about the electronic unit to one field wired alt... I have had some different opinions about those units, being some bad, some good.

about the dual field myth... he is right all alt have dual field since you need both fields to create magnetism inside the alt.

The diff is being when both are wired from a diff alt source or one wired and the other one directly grounded to alt. Thats maybe the reason to the single and dual field alts denomination.