[Woodchuck]

Not the point. 66-up all had the internal cap. But not 65. His new wire will have the plug. Any radio-equipped 65 would have the cap. If he has a replacement alternator, sure, it'll be sure to have the internal cap, but it would cause no harm to have the external cap, too.

True dat. I did notice, in a photo, that he had a Motorcraft case so....

 

[ginpunk]

@22GT correct. New harness has a plug for it but I’ve not put in the capacitor-at the alternator nor at the VR.

Alternator is a replacement (has Motorcraft embossed on the back).

I notice you are missing the static suppression condenser. They are available in nice repro. That's a 65-only item. The new harness should have a plug for it.

 

[ginpunk]

Good morning.

So new Motorcraft branded VR = flashing ALT light on dash
Old mechanical VR = NO flashing light on dash

At idle, the volt reading is spastic for both VR's.

Perhaps an alternator problem?

 

[Woodchuck]

Shot in the dark.... unplug the IVR (instrument voltage regulator) and tell me what happens. Perhaps the instrument cluster is not properly grounded?

 

[ginpunk]

@Woodchuck when I pull the cable at the VR, light goes out.

Voltage reading at idle is 14.8 - 15.7 I have zero electronics.

I’ll have to dig in with the IVR…

 

[ginpunk]

IVR unplugged = no ALT blinking.

 

[289vert]

Has the charge light been replaced with a led?

 

[ginpunk]

No LED’s.

 

[Woodchuck]

IVR unplugged = no ALT blinking.

Check your instrument cluster and engine to firewall grounds. The cluster grounds through tabs that contact the 2 lower mounting screws. You might try a dedicated ground wire between the IVR mounting screw and the metal dash structure. Also check the continuity of the ground between the voltage regulator and radiator support.

 

[sergioregraguy]

They are available in nice repro. That's a 65-only item. The new harness should have a plug for it.

vps germany​