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Need help with this blue wire

Posted: Sat Jul 20, 2013 7:14 pm
by pearljam724
Reason for the confusion. I have installed a new front and rear harness. It differs from my original one and the original owner had several different wires spliced every different direction. I've looked at schematics and I can not find answers to my couple of questions. First there is a lighter blue ( actually Aqua colored wire ) that runs from the harness to the turn signal relay. That is not the blue wire in question. The wire I am questioning is a regular shade of blue and in the second picture I posted. The blue wire runs off my new rear harness. However, that same color wire is connected to the rear socket of the 1st picture posted with electric grease inside the cavity. That cavity had no blue wire attached for my original set up. As you can see in the 2nd picture. That same colored wire leads from the gear indicator that I have attached new spades to. That socket for the indicator has six wires. Easy to understand. That blue wire is an additional seventh. Does that wire connect to the blue wire shown above it in picture 2 or to the socket shown in picture 1 ? What does this wire supply power to ? And regardless of which I connect to, the wire above the neutral switch or the one on the socket panel. There would be one left over with no connection. :x

Re: Need help with this blue wire

Posted: Sun Jul 21, 2013 11:29 am
by Suzsmokeyallan
On the front harness the blue wire comes from one side of the neutral bulb, it then goes to the rear section where it joins at the points four pin socket. From there it then continued to the sensor on the shift drum if its a 72 or 73 bike.
If its a 74 to 77 bike the points socket blue wire is not filled on the points engine socket side. The later bikes have a splice in the rear harness for what appears to be a spare blue wire, but its the same branch of the blue wire seen at the points socket. Simply plug the (spare) blue wire into the one next to the digital display sub harness by the left side cover with the bullet connectors and you will have neutral in the centre console.
Look at the attached schematic and you can see how its wired. Notice the blue wire goes to the points wire socket in this diagram but nothing continues on from there as this is for the 74 and later bike with the digital indicator using the branch circuit on the other blue wire.

Re: Need help with this blue wire

Posted: Thu Aug 01, 2013 4:50 pm
by pearljam724
You were correct, Allan. It's all good. Thank you, for your help.