The Rovering Member
Well-Known Member
I bought a new pair of wiper blades & arms for my Oxford at The Enfield Pageant last weekend. The arms are slightly different to the originals being beefier with a larger spring owing to the general weediness of the originals which l have always found pretty inadequate on the Farina's l have owned. They fit well with a good sweep & very effective water clearance but l am finding that they stop once the worst of the water has gone which is obviously the stronger springs fighting the perhaps tired motor. Fold the wipers back & away they go:
In the hope of a general improvement of the system, I do have these on the shelf. I bought the square one in a Rover box but as yet haven't found a Rover that it fits, nevertheless it looks as if it could be mounted in the Oxford with a suitable bracket to hold it to the bulkhead. It might be a two-speed too:
It shows every sign of being NOS or factory reconditioned but trying to bench test the motor l've had no sign of life as yet. As far as l can see from some t'internet searching of the Lucas units, the green is normally a permanent live so as to power the park function after switch-off, the earth cable also supply's the park switch, not sure why it needs it's own earth cable as the casing & cable are connected, the main earth being the casing. Then the other two connections are the fast & slow speeds (unless it's a single speed unit & one is for the park switch) which supposedly are switchable live wires & the switch apparently grounds the connections though l'm not sure how that would work. Surely the switch should supply the live feed rather than one already being there & then earth through the motor & casing.
So far l've deduced that whichever coloured cable is connected to live also energises the other two but if that's the way it's wired you can't directly ground them as that's a dead short so how is the circuit completed to power the motor, which hasn't even coughed yet? Do the three live wires signify a fault in the circuitry or have l got it completely wrong?
Simply earthing the case/black wire & connecting live to any of the colour cables does nothing.
In the hope of a general improvement of the system, I do have these on the shelf. I bought the square one in a Rover box but as yet haven't found a Rover that it fits, nevertheless it looks as if it could be mounted in the Oxford with a suitable bracket to hold it to the bulkhead. It might be a two-speed too:
It shows every sign of being NOS or factory reconditioned but trying to bench test the motor l've had no sign of life as yet. As far as l can see from some t'internet searching of the Lucas units, the green is normally a permanent live so as to power the park function after switch-off, the earth cable also supply's the park switch, not sure why it needs it's own earth cable as the casing & cable are connected, the main earth being the casing. Then the other two connections are the fast & slow speeds (unless it's a single speed unit & one is for the park switch) which supposedly are switchable live wires & the switch apparently grounds the connections though l'm not sure how that would work. Surely the switch should supply the live feed rather than one already being there & then earth through the motor & casing.
So far l've deduced that whichever coloured cable is connected to live also energises the other two but if that's the way it's wired you can't directly ground them as that's a dead short so how is the circuit completed to power the motor, which hasn't even coughed yet? Do the three live wires signify a fault in the circuitry or have l got it completely wrong?
Simply earthing the case/black wire & connecting live to any of the colour cables does nothing.
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