Pacific coast Datsun Posted February 28, 2007 Report Share Posted February 28, 2007 Ok as you guys know I now have my electronic dist. & HEI module hooked up & the 620 is running great now. I thought it would be good to post pics of the wiring & the writeup Mklotz sent me. Without Mike & Ryan's help it wouldnt have gotten done so soon so a big thanks to those guys. The dist. came out of a 76 610 w/ L 20 motor.... the letters on the HEI L to R are...W G B C this is the HEI i went with... http://www.partsamerica.com/ProductDetail.aspx?mfrcode=NIE&mfrpartnumber=DR400CS&parttype=194&ptset=A I plan on moving the HEI & using a small piece of alluminum under it to act as a "heat sink". The HEI's tend to get hot & that's not good for them.Also make sure the HEI is grounded or it will malfunction. > > > Wiring for the HEI unit. > > W - Connects to the positive lead at the distributor. > G - Connects to the negative lead at the distributor. > C - Connects to the negative side of the coil. > B - Connects to the positive side of the coil. > > > Okay...I'll add this to it........ > > You will need a new wire from the RED wire on the dist to the W on the HEI > unit. > You will need a new wire from the GREEN wire on the dist to the G on the > HEI unit > These two wires are what "senses" the tiny voltage spike that will be sent > from the pickup in the dist. > > You will need a new wire from the (+) of the coil to the B on the HEI > unit. This provides the power to the HEI unit. It's electronics needs to > get power from somewhere. You will "add" this wire to the existing wires > on that terminal of the coil. You will have wires on there from the > ballast resistor, the "start/crank"(full 12v) wire from the ign switch. Do > not remove the ballast resistor unless you have a coil that is rated for a > constant 12v. If you remove the ballast, you can simply connect the two > wires from the resistor together. You may have only one wire at each end > of the resistor and then you have a 2nd wire on the (+) term of the coil. > The second wire is the "start/crank" wire from the ign switch. You should > be able to see which wire runs from the resistor to the coil. If not, the > black/white is from the resistor and the red is from the ign sw. If you > simply take the resistor out without connecting to the two wires together, > your engine will only fire when the key is in the crank position and will > die when you quit cranking. If you remove the "start/crank" wire, you > will still get volts to the coil through the resistor in the crank > position(I double checked that on the '74 620 w/man trans wiring), but the > starter pulls a lot of amps and you may not get enough power to the coil > to get a good enough spark to start the eng. > > The wire from the (-) term of the coil can be the old one running to the > dist, but I'd just run new and disconnect the old one. You may have two > wires on that term...one will be the tach if you have one. This wire runs > to the C on the HEI unit and turns the coil on and off like the points > did. > > The HEI unit grounds itself through the metal plate on it's backside and > the collets in the mounting screw holes. You want to make sure you mount > the unit to a piece of aluminum with a small amount of heat sink compound > for heat transfer. Then mount the alum bracket to a good chassis ground. > I would try to tuck it up, more out of the way so that water and debris > flying up don't hit it. It was designed to be inside the GM distributor. Quote Link to comment
81sunnyson Posted January 10, 2014 Report Share Posted January 10, 2014 can this only be done with a points distributor? this is like a poor mans MSD Quote Link to comment
Pacific coast Datsun Posted January 11, 2014 Author Report Share Posted January 11, 2014 I did the swap to eliminate the points...if you already have EI ignore this writeup. Quote Link to comment
TENDRIL Posted April 23, 2014 Report Share Posted April 23, 2014 so i believe i fried my ign. module on my matchbox so while waiting to find another one, am i able to wire this in with my EI dizzy? also that link is dead. can you use the 8cyl ign. module ?? that's all my part store has Quote Link to comment
smoke Posted April 23, 2014 Report Share Posted April 23, 2014 Yes to all that 1 Quote Link to comment
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