question installing newer voltage regulator in a 68

[scottlanes]

I needed a new vr so i decided to upgrade to the newer electronic style. I followed these directions from a tech article over on moparts:

As i understand the above diagram i join the 3 wires on the old vr (2 from one side and 1 from the other) and put them on the center post on the new vr, then run a wire from the 2nd field on the alternator to the outside post on the new vr

The system is acting like the vr has been bypassed and when i rev the motor the system voltage bumps up to almost 18v

what am i missing?

 

[74sundance]

Isn't that diagram from my mopar.com not Moparts.com???

To use it, you need any alternator with two field terminals, and the connector itself which is an easy junkyard score, or can still be had new as of 1999. Simply splice the connector, wire-color for wire-color, to the existing (old) regulator pigtails. Then simply splice in one more blue wire which you then run over to the second alternator field terminal. (If you’ve been using a later 2-field-terminal alternator with a pre-‘70 regulator, the second terminal would have been grounded through a short jumper wire - remove the jumper, naturally.) That’s all there is to it!

 

[scottlanes]

Isn't that diagram from my mopar.com not Moparts.com???

To use it, you need any alternator with two field terminals, and the connector itself which is an easy junkyard score, or can still be had new as of 1999. Simply splice the connector, wire-color for wire-color, to the existing (old) regulator pigtails. Then simply splice in one more blue wire which you then run over to the second alternator field terminal. (If you’ve been using a later 2-field-terminal alternator with a pre-‘70 regulator, the second terminal would have been grounded through a short jumper wire - remove the jumper, naturally.) That’s all there is to it!

I dont have the new plug/pigtails, but i do have connectors that fit nicely onto the posts on the new vr. There are 2 wires on one side of the old vr and the green field wire on the other side of the old vr.

I ran a new wire (as you describe) from the 2nd field of the alternator (i have a newer 2 field alt) to the outside post of the new vr. Do I simply combine the 3 wires on the old vr and put them on the center post? when i do that the system runs at 16-18v as soon as the engine revs. I guess it would be possible that i got a bad, brand new electronic vr but i doubt it. I'd guess I'm not wiring this right.

 

[Propwash]

Did you know they make an electronic version voltage regulator for the 1968, without modification of wiring?

They work great

 

[scottlanes]

Did you know they make an electronic version voltage regulator for the 1968, without modification of wiring?

They work great

69runner just told me that, i didnt know. Im trying to figure out a part number for it. When i went to my local parts store they gave me a mechanical one which has now crapped out.

Do you happen to have a part number that i can grab at a local Adap or pep boys?

thanks!

-scott

 

[Propwash]

Scott,

I bought mine from Year One. I believe it was $35 bucks. Just go to there website under electrical then voltage regulators. Pretty easy to find. I also attached a pic showing the part number and MFG. of the one installed in my car. Maybe adap or pep can cross reference?

Good Luck

 

[scottlanes]

great! thanks!

 

[Propwash]

No sweat