Distributor Wiring Diagram

[LKPar1270]

I'm putting a NapZ engine in my 320.  I've changed the FI to a Weber carb and the distributor to one for an '84 720.  My new distributor has 5 connections inside labeled E B D T I.  The only wiring diagram I can find is for a distributor with only 3 connections.  Can anyone tell me where the connections on my distributor go or give me a link to a diagram for this distributor?

[datzenmike]

The 3 wire, is power in the middle and a coil negative wire on each side. Later Z24 models added a 4th wire that is grounded by a low manifold vacuum switch that allow the module to turn off the exhaust side coil to "reduce engine noise under heavy load" as Nissan states. If the 4th wire is disconnected, not used or the vacuum switch is missing it just fires both coils at all times. 

 

Not familiar with a 5 terminal distributor. Possibly it added a separate ground.... E? I'll try to look something up when I get home.

[captain720]

I couldn't find anything about the 5 wire. I have pics of proper color coded 4 wire if you want that

[LKPar1270]

My thought was the E is negitive exhaust side coil, B is battery, D can't think of a thing, T tach, and I intake coil negitive.

Gonna try it just hooking up the E, B, and I terminals unless someone knows better.

Thank for getting back to me on this.

[datzenmike]

The tach is run off the intake coil negative terminal although the exhaust will also work.... but the tach would shut off with the coil on a 4 wire. :lol:

 

All I have is a 3 wire.

 

 

E... Intake negative terminal

B... Battery?

I.... Exhaust negative terminal

 

E and I may be reversed but this will still work.

 

Does yours look anything like this?????? Maybe it a different distributor.

[LKPar1270]

Mine looks similar, but there are 5 connections, as if there were 2 more connections between your B and I tabs.

[LKPar1270]

I was suprised to see in the wiring diagram that there's a condenser for each coil, I've never seen them used in any ignition system not using points. Is there a special condensor for these systems or can I use one fou a point system?

[datzenmike]

It's probably for noise suppression on the radio. I can't find the value for them.

[DIY 1985]

My 85 FSM diagram suggests a single condenser for both coils.  The intake coil neg. terminal goes to a resistor and splits to tachometer and D on the E.C.C. Control Unit.  I have a LY (Lavender Yellow?) and a LW (Lavender White?) colored wires that go to the E.C.C. Control Unit on one diagram.  The Br (Brown?) wire would be juice from the ignition switch, and the R (Red?) would go to the exhaust coil, the WL (White Lavender?) would be the intake coil.  These are all on the same sub-harness connector

 

The diagram describes a B wire sub-harness that grounds the distributor at the condenser, but, does B mean Blue or Black?

[datzenmike]

L is Blue

B is Black

[LKPar1270]

Wire colors mean nothing to me, I'm wiring the ignition system from scratch, It was my thought also that the condensers were radio suppresion, which would make them a different rating than for points protection. I'm going to just ignore the D and T connections in my distributor, and the condenser too.

[LKPar1270]

https://www.dropbox.com/s/hrcp1hf3gbioc1s/Distributor.jpg?dl=0

[Charlie69]

Condensors are radio noise suppression.

[LKPar1270]

Also required for kettering ignition to control points arking, are you talking specifically about the condensers on the distributors we're discussing?