Scott Drake Constant Voltage Regulator Improved Design 1965-1966

CJ Classics:
B9MZ-10804-EADJ
Scott Drake Constant Voltage Regulator Improved Design 1965-1966 is rated 4.4 out of 5 by 28.
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Highlights

  • Common Fix For Faulty Gauges
  • Regulates Cluster Voltage
  • Direct-Fit
  • Made In The USA
MSRP $41.95
$36.99
You save 12%

Scott Drake Improved Design Constant Voltage Regulator for 1965-1966 Mustangs.

If your classic 1965-1966 Mustang is having electrical issues, it may be time to replace the voltage regulator in your dash. This Improved Design Constant Voltage Regulator B9MZ-10804-EADJ from Scott Drake is exactly what you need!

This regulator features an improved design to be more reliable and accurate in varying environments associated with heat and humidity, as well as solid state electronic circuitry and variable controls. When this part goes bad, it may cause one or more of the dash gauges to stop working properly. If you're not sure where to start with your pony's gauges, than this is your perfect first step! These regulators from Scott Drake are made of only premium materials, ensuring that they're able to withstand every weather and environment condition and still be durable for years to come. Scott Drake is also proud to announce that the premium materials of this regulator are all made in the U.S.A.

Tech Tip: This Constant Voltage Regulator mounts behind dash gauges.

Scott Drake has become an iconic brand that redefines quality for reproduction and aftermarket Mustang parts for 1964 to present Mustangs, and has become the standard for OEM quality Mustang parts that offer the best fit and durability. CJ Pony Parts offers a large selection of these parts that have become so popular that many customers ask for them by name.

Order a Scott Drake B9MZ-10804-EADJ Improved Design Constant Voltage Regulator for your 1965-1966 Mustang from CJ Pony Parts today!

Installation Difficulty

Easy
Easy

Novice skill is required for this installation.

Installation Videos

Vehicle Fitment

This product will fit the following Mustang years:

Rated 4 out of 5 by from I think so?!?!? So I had read other reviews that suggested if your gages weren't working, this would help "bring them back to life." The cost wasn't a whole lot, and I had to break into the dash anyway, so I splurged for the part. My temperature gage was the only thing that wasn't working. This part was installed, and at first nothing, but the lest few trips before the Wisconsin winter shows my temperature gage coming to life! Now did it come to life right away? No. Is it showing signs of life after the regulator was put in? YES! For the cost of the regulator and to get this result, I'd say go for it. No brainer in my mind. So you're out $40 ish on the chance it doesn't work for your classic mustang? No brainer.
Date published: 2015-10-30
Rated 4 out of 5 by from Will work on 66 289 Mustang I’ve been struggling with the gauges on 66 Mustang for a year now. Temp gauge always read high with constant regulator or too low and would bounce with factory regulator. I replaced sending unit, gauge and factory CVR with same results. Finally I installed the Scott Drake regulator with a motorcraft sender part# F1SZ-1P884XA. This unit has the green colored insulator not the black one. There is about a 20 ohm difference between them. The green one being higher. Terminal on the green one is also a little smaller so you will have to squeeze your connector a little to make it fit tight. Now my temp gauge reads perfect, dead center.
Date published: 2017-11-29
Rated 5 out of 5 by from Gauges Work Again! Gauges never worked right before swapping this out. The fuel gauge with not go above 1/4 tank when full and the temp gauge never worked. Installed this Scott Drake version and everything works again! Easy to install as well.
Date published: 2015-01-26
Rated 5 out of 5 by from gauges My gas gauge was not working right. Once I put this regulator on everything works great.
Date published: 2015-02-13
Rated 5 out of 5 by from Perfect Fix After both of my gauges quit working, I replaced the original CVR with this improved Scott Drake CVR and wa-la, they work again. This was a perfect fix for what I needed. CJPP is always my go-to.
Date published: 2015-01-07
Rated 5 out of 5 by from Learned my lesson Great solution to gauge problems....foolishly I tried the "cheaper" versions but they failed quickly. This regulator is still holding put and working great.
Date published: 2015-09-10
Rated 5 out of 5 by from Constant Voltage Regular and other parts There are a number of parts I've bought in the past couple of months as I refreshed my dash. They include the "Constant Voltage Regulator" as shown here, plus a radio, radio speakers, dash pad, paint, and probably something else I forgot to mention. All (ALL) parts worked as hoped, and CJ Pony Parts is my only choice for Mustang parts. Also, all representatives with whom I spoke were 100% service oriented. It is a real pleasure to do business with CJ Pony Parts!
Date published: 2017-04-09
Rated 5 out of 5 by from American made solid state Purchased this item and it was not the problem..I had a bad ground on the firewall..same indications with the three gague not working. Ground was tight but when I removed the screw cleaned it up and everything back to normal..Prob would of needed a new cvr in the future so no big deal.
Date published: 2016-04-02
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This will be the third car on my 65 mustang. None have reduced voltage, can the higher voltage damage my gauges

Asked by: Mike
Yes it can.
Answered by: rk cjpp
Date published: 2019-07-02

does this work on positive and negative ground cars?

Asked by: elmont50
Negative.
Answered by: rk cjpp
Date published: 2017-11-01

what is the output voltage for this regulator. It may be possible for me to use this for the instruments in my MGBs Thanks

Asked by: maggibe
12 volt to 6 volt.
Answered by: CJPP Dave
Date published: 2016-08-29

Is this a 12 volt to 6 volt to run the gauges. I need one for a 1955 ford that will do that

Asked by: Danlfrye
Yes it is.
Answered by: rk cjpp
Date published: 2018-04-28

Will this CVR work on my 1964 Fairlane?

Asked by: Pappy 64
The vendor has not provided any information regarding cross-fitments of this part to any other model then what is listed, but it should be the same.
Answered by: rk cjpp
Date published: 2016-06-20

I replaced my speedo cable and still have a little bounce in the needle.  Would changing this help that at all?

Asked by: Mal65
No it will not fix the speedo, check the gear on the end of the cable if that is good it could possibly be in the speedo itself.
Answered by: rk cjpp
Date published: 2016-04-26

Will this work for my 1964-1/2 Mustang???

Asked by: Norm1964
Yes.
Answered by: CJPP Dave
Date published: 2016-01-08

Dear air my gauges don't work .is it regolator or  the switch i have to replace.my mustang is 66 6 cyl.

Asked by: tzion
The voltage regulator is a good bet to be the problem. This one will fit your 1966.
Answered by: CJ Pony Parts
Date published: 2016-06-09
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