Big Brother is going 3G

[ArdWrknTrk]

It's over by the fender relay and regulator.
Red, orange, Lt green, yellow.

[Gary Lewis]

It should be below the voltage regulator.

[ArdWrknTrk]

I said multiple places, because in the EVTM they just lay the circuits out so they are easy to see, it looks nothing like the actual harness.
The pictogram (I won't even begin to call it a schematic) C610 -one plug- is shown in four places.  

[BigBrother-84]

Ok, I’ll see tomorrow morning.

But if I’m right I looked there and didn’t see it.  Hope it is there, or I’m wondering that someone in past Big Bro’s life has get rid of it and spliced the wires…

[ArdWrknTrk]

Splicing the shunt is not a good idea.  
But we all know this truck has been hacked up over time.

[BigBrother-84]

Gary, thanks for precisions and (again) for the wiring diagram.

Although I still have a question about the choke heater wiring.

Do I understand that this connector…


… will not go to its stator plug, but instead will be spliced only with the choke wire?

[ArdWrknTrk]

No.
It MUST go to the stator socket on the 3G or ta alternator won't work at all.

[Gary Lewis]

I'll say it differently.  I don't remember how the W/Bk that is shown in the middle of the plug on the right is terminated on the cable I sent you, but I think it goes to the plug you circled.  If so then your W/Bk wire to the choke heater goes there, and I assumed you had a matching connector.  No?

[ArdWrknTrk]

Gary, that connector fits the (S) receptacle on the 3G. (between the regulator plug and charge stud)

[BigBrother-84]

Just to be sure we all agree, here is a picture of 3G connectors (I stole it from Giraffe/John's thread).
I circled the connector in red.  I understand that it has to be connected, as in this picture:


If so, may I humbly suggest a modification in the diagram.

If we focus on 3G wiring, the diagram could look like this:
 
And if we need to connect the Choke Heater, it should be spliced here:



Am I wrong?

[ArdWrknTrk]

You're not wrong, but in your case (351HO only) the choke heater is pulled in by a relay...

Have a look at your EVTM.  

[ArdWrknTrk]

[BigBrother-84]

Jim, not sure Jeff Dummy is understanding...

Here is the EVTM I have (1984):


On the 1G diagram, I do not see any relay for my Choke Heater.  Maybe somewhere else in the diagrams?

[ArdWrknTrk]

You need to look at 'Carburetor Circuits' Jeff...  💡

Maybe '84 is different than '85?
I'm using the EVTM that I can get here onsite.

[BigBrother-84]

Jim, here are the 2 pages "Carburetor Circuits" of my 1984 EVTM.



I don't see any Choke Heater relay.

[ArdWrknTrk]

Interesting.

So your EVTM doesn't have a dedicated page for the 315 HO like the '85 I posted?

I can't know it if I've never seen it....

[Gary Lewis]

So, the question is whether Big Bro has the relay or not.  Hard to believe he wouldn't if it has the 4180C carb as I thought those had a 12V choke.

Jeff - Where does the W/Bk wire from the choke go?  Does it go to a relay or to the alternator?  If it goes to a relay then we need the W/Bk that comes from the relay and goes to the alternator.  If it goes directly to the alternator then that's the one we need to tie into.

[ArdWrknTrk]

My thoughts exactly Gary.
But does BB wear the stock 4180? (It's a great carb!)

Like I said, I have an encyclopedic memory for schematics, but I've never seen a 1984 EVTM.....  

[ArdWrknTrk]

BigBrother-84 wrote

Jim, here are the 2 pages "Carburetor Circuits" of my 1984 EVTM.

I don't see any Choke Heater relay.

I don't see any choke heater at all, and yet I KNOW there is one....  

[BigBrother-84]

Big Bro has a 7V Choke Heater.  When I replaced his carb, the new one came with a 12V and I swapped them.

I'm going right now to confirm where the wire goes.  Stay tuned!