Hi, I've purchased an 89 NC30 project which is in the process of being stripped for cleaning etc and have come across a problem that I hope someone here can help me with. The pulse generator looks to be aftermarket as it has 3 yellow wires that have been crimped and heat shrunk onto the wiring from the main harness. ie someone's chopped the plug off!

Now according to the wiring diagram there should be 4 wires from the pulse generator of 4 different colours but on my wiring loom it's currently 3 wires (all yellow) from the generator, connected to 3 yellow with silver bands wires in the main loom???? Why can I only find 3 wires????

The bike ran before the strip down so it all works but it means I need to take the loom out with the engine as they're hard wired together. So the other question is, if I cut the hard wiring to seperate the engine from the loom, does it matter which way round its wired back up as all the wire colours are the same?

I will be marking them up with tape and numbering the wires before cutting them etc but covering the bases incase the tape comes off in storage. Then I'll be refitting a proper a plug!!!

Sorry for the long post, and thanks in advance for any help anyone can give me.

paul8420484 wrote:Hi, I've purchased an 89 NC30 project which is in the process of being stripped for cleaning etc and have come across a problem that I hope someone here can help me with. The pulse generator looks to be aftermarket as it has 3 yellow wires that have been crimped and heat shrunk onto the wiring from the main harness. ie someone's chopped the plug off!

Now according to the wiring diagram there should be 4 wires from the pulse generator of 4 different colours but on my wiring loom it's currently 3 wires (all yellow) from the generator, connected to 3 yellow with silver bands wires in the main loom???? Why can I only find 3 wires????

The bike ran before the strip down so it all works but it means I need to take the loom out with the engine as they're hard wired together. So the other question is, if I cut the hard wiring to seperate the engine from the loom, does it matter which way round its wired back up as all the wire colours are the same?

I will be marking them up with tape and numbering the wires before cutting them etc but covering the bases incase the tape comes off in storage. Then I'll be refitting a proper a plug!!!

Sorry for the long post, and thanks in advance for any help anyone can give me.

You are confused.

Pulse generator is on the other side of the engine and gives the signals for the ignition coils to make a spark.

The generator you are talking about is just the normal electric generator and has only 3 yellow wires.

They can go in any order when you reconect it.

Its had charging system issues in the past and melted the plug (very common) which is why the plug has been chopped off.

Start with your actual issue and what checks you have done and somebody will tell you what you need to do.