Posted By: moparjo68
68 Charger single to dual field conversion - 05/01/11 02:22 AM
Hello. Would love to chat with a 68 Charger owner who has updated their charging system from old volt. reg. and single field alt to the '70 charging system. I have the components for the switchover (brand new '70 volt. reg. with the 2 wire plug in, 60amp dual field alt.) but I am having technical difficulties in getting system to now charge.
Question #1: The original green field wire goes to the green wire on the newer '70 volt. reg. plug. Where does the other field wire connect to? Does it HAVE to be grounded to alt or can it hook up somewhere and be functionable?
Question #2: The '68 Charger has a drk bl wire and a drk bl wire w/tracer going to ign side of old volt. reg. Do these two wires now go to ign side of newer '70 volt. reg.?
In the near future, I will purchase the new wiring harness from Y.O. but for now, can someone out there who's been down this road steer me in the right direction for now? Thanks so much, Joe
Posted By: RapidRobert
Re: 68 Charger single to dual field conversion - 05/01/11 04:37 AM
run the dark blue/ blue w tracer wires to the "ign" terminal on the v reg which is the "top" terminal in the triangle w it "up" like a pyramid and T off of this line to either alt field terminal. The OE green wire, run it from the other alt field terminal to the "side" terminal in the triangle. You can trim the sides of a '70 up flat v reg & it will nestle neatly in the squarish firewall recess where the OE mechanical "box" type resided & redrill 1 hole on one of the sides of it
Posted By: SomeCarGuy
Re: 68 Charger single to dual field conversion - 05/01/11 05:27 AM
You could run the old reg and ground the second field just to get going again.
Posted By: moparjo68
Re: 68 Charger single to dual field conversion - 05/01/11 06:01 AM
I took the two wires.........the dark bl and dark bl w/tracer and connected to inside terminal of new reg (ign side). I also connected new field wire to this same terminal. OE field wire is connected to outside terminal of new reg(field side). It was charging before the switch.......now its not. I wonder what I did wrong???????
Posted By: RapidRobert
Re: 68 Charger single to dual field conversion - 05/01/11 01:45 PM
When you say "inside" terminal you mean the top one in the pyramid right?. Might full field the alt; take both field wires off of it/eng at a fast idle/w (2) jumper wires jump one alt male field to batt positive post and jump the other alt male field terminal to ground for several seconds MAX. this'll tell you if the alt is good as from your descrip the wiring sounds correct unless I'm missing something. You'll hear the eng slow down slightly from the max load if the alt is putting out a good charge
Posted By: moparjo68
Re: 68 Charger single to dual field conversion - 05/01/11 04:42 PM
There are only two terminals on this '70 reg. Facing the reg., the left terminal has the two ign wires and new field wire attached to it. The right terminal has the OE field wire attached to it
Posted By: moparjo68
Re: 68 Charger single to dual field conversion - 05/01/11 04:45 PM
Yes, the system was charging with the old volt reg, old one field alt. All connections are clean, tight, checked, rechecked and rechecked again.
Posted By: NachoRT74
Re: 68 Charger single to dual field conversion - 05/01/11 05:36 PM
colored and edited diagram
Posted By: moparjo68
Re: 68 Charger single to dual field conversion - 05/01/11 05:45 PM
Yes, that is how I hooked up new volt. reg and newer alt. So I am puzzled and frustrated that it doesn't charge.
Posted By: RapidRobert
Re: 68 Charger single to dual field conversion - 05/01/11 07:23 PM
"full field" the alt & if it's good then there's an open in the diagram Nacho posted for you, grab your meter
Posted By: moparjo68
Re: 68 Charger single to dual field conversion - 05/02/11 01:37 AM
The alt checks out fine. I even have a spare alt and it checks out fine. I hooked the charging system back up to the old style black rectangular volt reg and single field alt. It now charges. But I want to convert over to the '70 charging system. I don't want to keep this setup.
Posted By: RapidRobert
Re: 68 Charger single to dual field conversion - 05/02/11 02:38 AM
Make up some long jumper wires w alligator clips on each end (they come in very handy all the time) and jump directly to each connection/terminal duplicating Nacho's diagram & when (at a fast idle) you parallel jump the particular wire that has the open you'll hear the alt kick in then fix the open in that wire & unless there's been serious amperage that's cooked the copper inside or frayed/melted insulation on the outside (You'd visually spot that) or broken strands from excessive flexing (which is rare) wires do not go bad for no reason along their length but do so at the ends/connections so find the errant wire and check the end terminals/connections. EDIT unless the reg is bad but it is brand new & assuming it's grounded good. MORE EDIT w it all hooked up/fast idle, jump the alt male terminal (w the green wire) to ground & if it full fields then that only leaves the reg/reg ground/green wire as everything else is functioning good
Posted By: moparjo68
Re: 68 Charger single to dual field conversion - 05/02/11 09:51 PM
Ahhhhhhhhhhh! It's a great day! Osama is dead and my Charger is charging with the '70 setup charging system. When you mentioned "grounding", I knew I had neglected this area. The '70 reg. has a beautiful THICK paint job and I took the Dremel and sanded off some of the paint. Now...........ITS CHARGING! Thank you thank you thank you for all your posts and help. Its a great day! Joe