Ignition switch wiring 1978 620

[willz]

Previous owner hacked the ignition switch and harness off and threw some cheap universal switch in. Now there's only 4 wires instead of what I would assume would have been 5? It's a 6 plug with 5 pins. Did he wire it correctly? I'll be mating this to the dzstart harness and want to make sure I know exactly what wire is what.

[datzenmike]

No way to know as that isn't a Nissan plug. Might as well be for a Ford.

 

 

What I can tell you is where the '78 wires should go.

 

Large thicker White wire..... main power wire from the fusible link to ACCY, ON and START

 

Black/Yellow........................ sends a start signal to the starter solenoid when ignition is in the START position

 

Black/White......................... powers the ignition coil + terminal, also ignition relay, transistor ignition in the ON and START ignition positions

 

Blue..................................... goes to the transistor ignition and to the coil negative terminal in ACCY and ON positions.

[HOGIE]

That's not a factory switch. The factory switch would've had 5 spade prongs. The factory harness would've been a 2X3 female connector with just 5 hole occupied by wires

[willz]

That's what I'm saying, they nixed the whole harness and wired in some crap switch that doesn't fit. I'm trying to figure out how to hook it up to datsundaves push button kit.

[willz]

From skib

 

Black fused - 12v

Yellow - Starter

White - Ignition

Blue - Accessory power

 

The green wire is for use with points ignition to keep any feedback IIRC.

[willz]

That's the dzstart harness^^

[datzenmike]

You have a '78......

 

Electronic ignition ... no Green points wire.

 

Only four wires used

[willz]

So from the factory harness to the DZ

 

White - Black

Blk/yellow - Yellow

Blk/white - White

Blue - Blue

 

Would this be correct?

[Doctor510]

Previous owner hacked the ignition switch and harness off and threw some cheap universal switch in. Now there's only 4 wires instead of what I would assume would have been 5? It's a 6 plug with 5 pins. Did he wire it correctly? I'll be mating this to the dzstart harness and want to make sure I know exactly what wire is what.

 

After market switch, looks to be wired correctly

 

[Apollo77]

Hey datzenmike, I have a 5wire ignition. I want to wire in two switches one for ignition and one for the starter. What I can't seem to get an answer for is what I do with the resistor wire

[datzenmike]

You'll need a third switch. Although it will likely start without it, the supply of 12 volts directly to the coil increases the spark voltage during starts. You can't run 12 volts continuously or the coil will over heat and points will arc and burn out in 50-100 miles.

 

Ignition goes to the ballast resistor.

Start goes to the starter solenoid.

3rd switch goes around the ballast directly to the coil positive terminal. Turn on when starting the engine and turn off when engine starts.

 

If you use a double pole single throw switch with one to the starter and the other to the coil. That would work.

 

 

 

It's just plain easier to use a proper ignition switch. One to the starter and one to the coil