windscreen washers

[wheelies]

1980 2FL beta spider


Before I begin to strip the dashboard out I thought that one of you might know the answer.
The washer pump is not working it will work with an auxillary power supply.
There is a black wire (earth) and a red wire with a black stripe from the pump both go into the cabin of the car.
From the wiper switch the other end there are 2 wires to a connection they are 2 yellow with a black rings and a red with a black stripe. At the connector they connect to a single yellow with a black rings and a red with a black rings.

The question is where does the red with a stripe change to a red with rings.
In the Haynes wiring diagram (different colour wires shown as expected with Hayne) there is only 2 connectors one at the pump and the other at the wiper switch, there must be another connector somewhere or do they go to the fuse box?
Anyone any ideas. Hope this makes sense.