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1973 wiper motor replace trouble

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Old 03-29-2017, 04:37 PM
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henrikse
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Default 1973 wiper motor replace trouble

I found that my wiper switch was bo so ordered a new one. It came and it is no good so waiting for new.
Dilemna is I bought a new 4960754 wiper motor online. It arrived and it has 2 extra terminals on front? From reading it looks like these are for a timing circuit or pulse? Attached pic of what it looks like.
My wiper motor does not have these so is there a way to fudge it or to still use this motor? It looks to have a relay and contact block that mine does not. When I try to bench test by putting 12v on center terminal and grn on lug as per Willcox testing procedure as soon as i grn the park terminal it clicks but does not run. I am missing something here. Short of removing all the extra stuff and rewiring like my old one I am at a loss.
Any help appreciated. The 4960754 numbers are the same on both.

Gary
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Old 03-30-2017, 01:24 PM
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MelWff
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I come up with part number 4918342 for a 1973 which is what Willcox sells for the 73.
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Old 03-30-2017, 03:27 PM
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0Willcox Corvette
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The correct wiper motor for a 1973 would be 4918342. 4960754 was a replacement motor that when new did not come with a washer pump, someone must have added the wrong one.

For your testing of this motor, ditch the washer pump and then run the test as follows making sure you have the case grounded.



Here is a list of all the original wiper motor numbers.

Year Number Notes
1956e 5047799 early
1956 5047924 Front cover has no plastic actuator switch; it has a flat metal slide. Access to the back side upper left cover attaching screw is thru a hole in the mounting arm.
1957e 5047984 s/n 1400 984 was fast park. 991 is a slow park design.
1957 5047991 slow part des. Dec 1957and later Dec. of 1957 and later cars only
1958 5044266 came with a new internal style switch design.. Better
1959 5044266 came with a new internal style switch design.. Better
1960 5044266 came with a new internal style switch design.. Better
1961 5044266 came with a new internal style switch design.. Better
1962e 5044266 s/n 2000 came with a new internal style switch design.. Better
1962 5044479 changes to this motor were: a plastic coated internal wiring and phillips screws on the actuator stand.
1963 5044518
1964 5044518
1965 5044602
1966 5044602
1967 5044602
1968 5044683
1969 5044731 foil decal foil decal 5044731 4939300 on case by Delco
1970 5044758 foil decal 5044758
1971 5044758 foil decal 5044780
1972 5044780 foil decal 5044780
1973 5044784 foil decal 5044784
1974 5044811 foil decal 5044811
1975 5044814 foil decal 5044814 Some say 811 not sure 4960974 is over counter repl
1976 5044814 foil decal 5044814 4960974 is over counter repl
1977 5044814 foil decal 5044814 4960974 is over counter repl
1978 5044814 standard foil decal 5044814 4960974 is over counter repl
1978 5044907 (pulse) foil decal 5044907
1979 5044814 standard foil decal 5044814 4960974 is over counter repl
1979 5044907 (pulse) foil decal 5044907
1980 5044907 (pulse) foil decal 5044907
1981 5044907 (pulse) foil decal 5044907
1982 5044907 (pulse) foil decal 5044907
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