What he is getting at is HQ had the washer pump on the wiper motor, but if you are using a HX-WB style wiper motor with a washer at the bottle he can put wires in the loom so it works without having extra wires run there.
There are 2 x different HQ headlamps styles, prior to later in 1972 the blinkers were the parkers but later on they had a little globe behind a hole in the mirror at the back of the headlamp.