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Old 10-29-2020, 06:51 PM   #1
Phil Gillespie
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Default 1946 Mercury 12v Wiper Bench Testing Help.

https://static.speedwaymotors.com/pd...structions.pdf

So fiting a Speedway 12v Electric Wiper Kit.
Fitted it up to car tried it then it stopped. Nil burning smell.
Its a 2 speed set up. 4 terminals on switch.
Battery, Park, High, Low. I wired incorrect at terminals!!
To now remove to check and want to bench test before refit.

How to set it up on bench to check/ test operation before refitting it.

ie 12v +ve to battery terminal. other 3 terminals as labelled.
Motor to be earthed back to -ve on battery and it should fire up??
Or hold in vice and earth vice back to battery?

Appreciate advice as hope motor is ok as long wait period for down under shipping.
Phil NZ
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Old 10-29-2020, 07:16 PM   #2
JSeery
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Default Re: 1946 Mercury 12v Wiper Bench Testing Help.

I tried reading over the installation instructions, quickly, so not sure I totally understand them. But, it looks like it is grounded through the wiper housing, so anyway to get a ground from the housing back to the battery should be fine.
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Old 10-29-2020, 07:25 PM   #3
Phil Gillespie
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Default Re: 1946 Mercury 12v Wiper Bench Testing Help.

Quote:
Originally Posted by JSeery View Post
I tried reading over the installation instructions, quickly, so not sure I totally understand them. But, it looks like it is grounded through the wiper housing, so anyway to get a ground from the housing back to the battery should be fine.
Thanks for confirmation on that one. Its easier to test on bench after check than do a double back flip under dash only to find it does not work.
There is no wiring diagram as such but understand resisitors are involved for speed changing.
Phil NZ
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Old 10-29-2020, 09:51 PM   #4
51 MERC-CT
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Default Re: 1946 Mercury 12v Wiper Bench Testing Help.

Did you in fact use the line with the in-line fuse to connect it to the battery?
If so is the fuse still good, or blown?
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Old 10-29-2020, 10:44 PM   #5
Phil Gillespie
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Default Re: 1946 Mercury 12v Wiper Bench Testing Help.

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Quote:
Originally Posted by 51 MERC-CT View Post
Did you in fact use the line with the in-line fuse to connect it to the battery?
If so is the fuse still good, or blown?
Yes used inline fuse. Fuse is still good. Understand start amps approx 12A came with a 20A fuse.
Phil NZ
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