raylish said:
Hello Brian, Dave,
I get that a wiring diagram is only a representation of the circuits, but what is the point of having separate diagrams for each model/year with numbered terminals and colour-coded wiring if none of it represents the actual circuit? I mean what is the point?....
I have followed the diagram as follows:
Dash Switch terminal number Wiper Motor plug-in terminal number
1 - Purple/Light Green 1 - Black Earth
2 - Blue/LG 2 - Red/Green
3 - Brown/LG (Appears to be permanent live) 3 - Blue/Green
4 - Brown/Purple 4 - Brown
5 - Yellow/LG 5 - Brown/Green
6 - Red/LG
All I appear to have is slow speed?
Ray
Hi Ray.
I have just finished repairing the intermittent wipers on my car, (successfully
), and I have been studying the diagram recently, and unless your wiring is different to mine, (and the spare switch that I have), you have the wires on 3 and 4 on the dash switch swapped over :?
You seem to confirm this as you say the diagram replicates looking at the rear contacts from the front, but I am not sure that this is correct. The switches I have, have the numbers embossed on the back. and the order they are in, (starting from 1 and moving clockwise looking from the front of the switch), is...
1 - Purple/Light Green
2 - Blue/LG
4 - Brown/LG
3 - Brown/Purple
5 - Yellow/LG
6 - Red/LG
or anti-clockwise looking at the rear of the switch...
Looking at the circuit diagram, the effect of reversing these two wires will indeed give you slow speed wipers, but no fast speed or delayed wipers, but as well as that I cannot see how, if wired the way you indicate, that you are not blowing fuses when the wipers are switched off, as there is a short between the +12V and ground connections, through the self parking switch.
You say you believe that this is where the fault lies, so I would be interested as to why you think that, (have you tested it with a multimeter), and I would be concerned that maybe it has had the contacts burnt out, due to this possible shorting, and the same will happen with a new one.
Another question would be, has the car always only had slow speed since your ownership, or was everything fine before the fault developed? If it has always been this way then I would definitely re-check the wiring before changing the parking switch/connector assembly.
I have a 1972 3500S vehicle, so maybe your car is a different model with a different switch, so I could of course be completely wrong :shock: :shock: :shock: