Overcharging issue PLEASE HELP AT WITTS END!

[Chryco69]

I have updated to electronic ignition on my 1969 Dodge Coronet.
I purchased a brand new M&H engine wiring harness, alternator, voltage regulator, coil, electronic ignition box, and a ballast resistor (dual field).

It keeps blowing the fusible link, and has recently killed a brand new electronic ignition box and now a voltage regulator.

The factory altimeter gauge is pegged in the positive when the vehicle is running.

Can someone please help me with advice? I have done quite a few searches but nothing has been the cure.

 

[440beep]

Check out this thread, I had the same issues. Its probably the blue and green wires that need to be connected together. Or the VR is bad, like mine was. The wiring diagram is most helpful.

http://www.forbbodiesonly.com/mopar...3-Installed-new-electronic-volt-regulator-and


Where in Indiana are you, may be close enough to each other for help.

 

[Chryco69]

Valparaiso, right east of you

 

[440beep]

oh hell, were really close. there's a couple of Mopar guys out there in Valpo.

 

[Chryco69]

Just changed the VR. Same issue

 

[tallhair]

Get rid of that altimeter for starters man you are in Indiana! .. and put a voltmeter on it

 

[440beep]

So on the voltage regulator connector, there's a green and a blue wire lead. The green lead is going to need a whole new wire spliced into going from the VR to the alternator. The VR blue lead is going to need three wires spliced into it: the old green wire, a solid blue wire, and a blue wire with white tracer on it.


From my prior post with this issue:

"However, I found these other instructions where it looks like I'm supposed to splice the green and blue wires together.

"Basically, a wire is added to the second field brush on the alternator. On the original alternator, this brush is grounded to the case of the alternator, so you'll need to change the alternator to a 1970 or newer style. The second field wire is connected to the outside plug on the newer voltage regulator (two plugs, one is in the middle, one is on the outside). The original field wire that ran to the "FLD" plug on the original voltage regulator (green wire) needs to be connected with the wire that ran to the "IGN" side of the original voltage regulator. This wire (both the old FLD and the old IGN) need to be connected to the center plug on the newer voltage regulator as well." "

 

[Chryco69]

Just noticed the passengers side tail light is blown out (New bulb)

 

[artr8]

Disconnect the field wires from the alternator to check if you have a grounded field. Observe the voltage. If discharging, the alternator field is ok.

 

[Chryco69]

I took off the brand new m&h wiring harness and installed an old original one. Problem solved. Now I need to strip the harness and find the problem

 

[lewtot184]

i have an m&h harnes on my 69 r/t and it works fine. all the overcharging issues i've had is because the regulator wasn't grounded well. the mopar blue regulators have to have some paint sanded off at the mounting screw area (i do it on the back side) and then i add a small grounding wire.

 

[Chryco69]

...Yeah was most definitely the M&H wiring harness. The voltage regulator is fine