Windshield Wiper Motor Substitution
Perhaps the most attractive feature of this retrofit is getting rid of that silly plastic gearwheel and push-cable mechanism in favor of a more rational tie-rod linkage. Acker provided a pic of his OEM assembly for comparison:
WIPER MOTOR, LINKAGE MODIFICATION
Modifications to Jaguar grille
1. Run a 10-32 tap down the threaded holes of the grille; be careful as the grille is made of pot metal (soft and brittle). Purchase some 10-32 X 3/8 long screws for the new motor mount bar to the grille.
2. At the wiper arm actuator holes of the Jaguar grille grind the bottom
of the pivot holes in the grille which is on the underneath side to the
enlarged area that is slightly indented from the bottom of the pivot holes
of the grille. The reason for this is that the new actuator pivots are
a little shorter in length.
3. The holes are larger in diameter than the Mazda/Courier pivots so I went to a local hardware store and purchased some plastic sleeves to help center the Mazda pivots in the Jaguar grille. The size was 5/8 outer by ½ inner, I used 4 of them total namely 2 on each side. These spacers are slightly longer than the distance of the grille holes. I had to grind a little off of plastic sleeves so that they would not interfere with the tightening of the Mazda pivots to the grille. The fit of these sleeves is not perfect, but since they are only to help center the pivots it is not a problem.
Modification of Mazda wiper bar linkage
5. I purchased a black iron round bar that was 3/8 inch in diameter
4 feet long and cut approximately 6 inches to insert inside of the 2 ends
of the wiper actuating linkage
MOUNTING PLATE/ BARS (motor)
1. Bend the new mount bar slightly then drill one hole and attach the
end of the bar to the back of the grille.
You can see the shortened rod from the actuators of the wiper linkage
Important notes about the motor
The linkage was from a Mazda B2000 pick up truck. The reason for the use of two different brands is that the Mazda uses a larger bolt pattern on the motor, the space under grille is rather limited in available space.
The motor has 2 speeds and a self-park feature built into the motor/gear
The actuating lever goes from the motor to the completed linkage. It will also have to be shortened and bent slightly as the motor is not exactly on the same plane, but at a slight angle to the bar linkage.
Another picture of the wiper arm with slight bend in it to allow the blade to sit lower on the windshield:
Wiring of motor
What wires that I did connect were as follows
Jaguar wires Mazda wires uses
Pink/green Green B+
White/green Green/Red Fast Speed
Black/green Green/white Slow Speed
The rest of the jag wires
there was one wire
After all the wires are connected test run the new system to check that
all the speeds work properly. The next thing to verify is that the wires
will clear the new linkage/ motor system so that there will be no interference
between them. When I did this there was interference so I had to run the
wires between the motor and the grille to keep them away from the linkage.
The best way to check for any interference is to temporally remove the
wire mesh grille that is under the normal grille and then reinstall it
after all the work is done satisfactorily.
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