Unidentified wires...alternator?

[eagleone1983]

I have a couple unidentified wires. The harness is an M&H Electronic ignition harness for a '69 RR. I have a Denso alternator that takes the circular plug with three wires hanging from it. I have a write up from Andy F that explains what the three wires are for in the new plug. He also states he just extended the dark blue wire from the Voltage Regulator and run an extra wire for the sense wire.

So what do I do with the wires in the pictures. The single dark blue wire has continuity with the dark blue wire at the VR plug, so couldn't I just use that wire for the IGN wire to the alternator? In the other pic I know it's kind of shadowed but there are two wires going into a single lug terminal they are a thicker black wire and a violet/purple wire. Thanks for any help.

 

[67 coronet]

i am fairly sur those are your two feild wires for the stock alternator.

 

[eagleone1983]

That's what I was thinking so can I just hook the blue wire up to the new IGN port for the new alternator or do I have to run a wire all the way from the VR plug? Then I guess I would just leave the VR plug dangling? I wouldn't have been easier just to keep all this stuff stock

 

[Nacho-RT74]

as usual, use non stock parts on stock installation becomes on a debate when you don't planify what to do before get the parts

Harness is an electronic regulator upgrade and dual prong system for an originally non electronic regulator system ( I guess 68/69 car ). I guess with electronic ignition upgrade too, by the distributor You have mounted.

Green wire comes straight from regulator plug and JUST links one of the alt field and regulator plug. Used like originally is on stock ELECTRONIC setup, is a negative source ( "ground" ) which is the regulated source

Blue wire is Ign, yes, so then, positive and feeds everything on motor: Ballast, ECU, Regulator, Choke if equipped and of course, alternator field. It has an splice down the tape just right before the ballast plug.

Black wire with eyelet terminal is alternator stud output.

violet wire coming from eyelet terminal is to feed the horn relay attached to radiator core support ( I guess your car is 69 then, because 70s weren't anymore on that way.

If the denso alternator you are using just requires one field source from IGN, you could have got the electronic ignition harness but mechanical regulator/single field alt, and splice together the wires the mechanical regulator should get, to feed the single wire field from ign, and won't have unused wires and plugs hanging around ;)

Just an idea.

I Guess the Denso alternator is internally regulated ?

 

[eagleone1983]

Nacho, I hear where your coming from. Planning goes a long way but my original plan was to just do the engine bay and drive the car for a while. After finding a hole the size of a half dollar by high beam switch I tore her all the way down. The Denso alternator is internally regulated so that's why I pulled my VR off the firewall. So if I'm understanding this correctly I can use the blue wire from the original alternator hook up as the IGN wire for the new Denso plug and the green one I could use as a sense wire and I would just hook the other end of that green wire to the starter relay batt terminal? I'm trying to keep cutting the harness to a minimum if possible.

 

[67 coronet]

did your denso conversion alt not come with the directions?looks like you would just be modifieing from a stock harness.

 

[eagleone1983]

Nope didn't come with directions, I bought the alternator bracket/new alt plug from AR Engineering but it didn't come with the directions for the hook up just how to install the bracket. Figured, there would be a write up by Andy F but so far all I've found from him is a post on another forum from him but doesn't really go into details nor does it have pics.

I'll be getting the battery hooked up today and once I go over the car to make sure I don't have any connections touching anything I'll put power on it so I can better figure out what's coming from where and when.

 

[Hemi Rebel]

This may help you out
http://www.dippy.org/forum2/index.php?topic=42.0

 

[eagleone1983]

Thanks Hemi, looks like I should just run the blue IGN wire from the VR all the way to the alt instead of trying to use the single blue wire I'm holding in my hand in the pic. Those wires are connected somewhere in the harness because I get continuity between the both. So can anybody verify that I have to run a new wire from the VR?

 

[Nacho-RT74]

use the blue wire at regulator plug/pigtail is the same than use the blue on hands. Its the same net. Both splices from same place.

If you need just the IGN signal, the blue wire in hands is enough.

If you plan to use the green wire to... something else, you can plug the one on alternator end, and take this signal from regulator plug/pigtail to not run a full wire from alt to... anywhere.

PER THE THREAD READING, you could use a male bullet terminal to plug it into the regulator pigtail green end, and run the wire to the starter relay stud. That will save some wiring allong the engine and will give some use to the existant ones

making this, the BLUE will become on ignition ( run ) signal, and GREEN will become on sense signal. Just Blue wire at regulator plug will be unused, or can be used to any other accesory you plan to use and requires an IGN ( RUN ) source in a future ( electrical choke, fuel pump etc... )

 

[eagleone1983]

use the blue wire at regulator plug/pigtail is the same than use the blue on hands. Its the same net. Both splices from same place.

If you need just the IGN signal, the blue wire in hands is enough.

If you plan to use the green wire to... something else, you can plug the one on alternator end, and take this signal from regulator plug/pigtail to not run a full wire from alt to... anywhere.

PER THE THREAD READING, you could use a male bullet terminal to plug it into the regulator pigtail green end, and run the wire to the starter relay stud. That will save some wiring allong the engine and will give some use to the existant ones

making this, the BLUE will become on ignition ( run ) signal, and GREEN will become on sense signal. Just Blue wire at regulator plug will be unused, or can be used to any other accesory you plan to use and requires an IGN ( RUN ) source in a future ( electrical choke, fuel pump etc... )

Nacho thanks for clearing it up for me. I'm gonna do exactly as you said and just so happens I still need to hook up my elec choke, you recommended the perfect place