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Old 15-09-2017, 09:02 PM
Geoff-R Geoff-R is offline
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Honda Wiper Motor Help

Hi all, tried to do a search on this but I'm not coming back with any definitive answers. I've got a 1974 260z and I've sourced the correct Honda wiper motor but I'm struggling with the wiring. A lot of the write ups seem to cover the conversion of the 240 but not a lot of info is about concerning the 260z. Has anyone done the conversion on a 260? If so what wires go where? I've got 5 wires on the Datsun side and 6 on the Honda side. Wire colours as follows:

Datsun:

Blue/red
Blue/yellow
Yellow
Black (X3)

Honda:

Green/black
Blue/white
Blue/yellow
Blue
Black

I'm not 100% sure if one of the 3 wires on the Datsun side is blue, they're a bit old and possibly discoloured but one of the 3 is a thinner guage wire.

Any help much appreciated as my Datsun motor is knackered.
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Old 15-09-2017, 09:13 PM
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Hi Geoff, what is the Honda motor you are using please
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Old 15-09-2017, 09:22 PM
Geoff-R Geoff-R is offline
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Hi Ben it's a motor removed from a Civic EG (92-95) shape hatchback.
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Old 15-09-2017, 09:25 PM
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Quote:
Originally Posted by Geoff-R View Post
Hi Ben it's a motor removed from a Civic EG (92-95) shape hatchback.
cheers Geoff. I think Rob Gaskin knows about the wiring of these motors
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Old 15-09-2017, 09:28 PM
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Here is a start Geoff. It's a diagram I did for myself on my blue car. For 240Z owners yellow wire is late 240 with intermittent.
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File Type: jpg Datsun - Honda Wiper wiring.jpg (769.4 KB, 35 views)
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Old 15-09-2017, 09:37 PM
Geoff-R Geoff-R is offline
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Cheers Rob much appreciated. I may tackle this this weekend, if I do I'll try and take pictures and do a write up. Out of interest in the Datsun motor I have or noted that there were 3 black wires. Without looking at the car are the wires a different colour on the loom side? Logic would say no. Attached are a few pictures of the wires on my motor.
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File Type: jpg IMG_20170910_190148_01.jpg (2.14 MB, 23 views)
File Type: jpg IMG_20170910_190159.jpg (2.36 MB, 23 views)
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Old 15-09-2017, 09:53 PM
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Geoff are you sure you have 3 black wires? Have you tried cleaning them?

Anyway I'll get back to you over the weekend.
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Old 16-09-2017, 10:39 AM
Geoff-R Geoff-R is offline
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Quite possible that they're dirty. I'll pick up a relay this morning and go have a look at the motor/car. I'm suspecting they may be dirty or have become discoloured with age. I'll report back.
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Old 16-09-2017, 12:18 PM
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Geoff I rigged it up to test it all and then made this for the relay and so I could put the old motor back if there was a problem.

My second one would be neater. I'm going to convert my Samuri I think.

Have a look at my other wiper Threads. The only problem you may have is where they park but try it first. I put stiff wire on the spindles instead of the wiper arms, until I sorted it.

Rob.
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File Type: jpg 20170731_200157.jpg (2.97 MB, 24 views)
File Type: jpg 20170731_201752.jpg (3.16 MB, 23 views)
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Old 16-09-2017, 06:16 PM
Geoff-R Geoff-R is offline
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I've had a quick look at the service manual and despite there actually being 3 black wires on the wiper side of the plug the service manual gives me something more in line with what your diagram shows Rob as per the attached picture.
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Old 16-09-2017, 07:48 PM
Geoff-R Geoff-R is offline
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I've temporarily rigged the wiper motor up but it runs constantly for some reason. I think from memory there may be a seperate relay in the early 260z in the passenger footwell. I can definitely hear a relay knocking on and off in that area. I've attached a video, shouldn't it rotate in both directions? In the video I cycle through the speeds.

https://vimeo.com/234136720
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Old 16-09-2017, 08:00 PM
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Quote:
Originally Posted by Geoff-R View Post
I've temporarily rigged the wiper motor up but it runs constantly for some reason. I think from memory there may be a seperate relay in the early 260z in the passenger footwell. I can definitely hear a relay knocking on and off in that area. I've attached a video, shouldn't it rotate in both directions? In the video I cycle through the speeds.

https://vimeo.com/234136720
That's the same motor as mine.

It only rotates one way which is the opposite way to the Datsun motor under normal circumstances (the Datsun motor reverses during parking anyway). That is not a problem. Constant running is a problem though - don't panic, you must have a wire crossed.

The relay you can hear may be the intermittent circuit - that does keep going even when not on intermittent.

I'll be back tomorrow.
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Last edited by Rob Gaskin; 20-09-2017 at 07:03 PM..
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Old 16-09-2017, 08:11 PM
Geoff-R Geoff-R is offline
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Good to know it's the same motor! Ah right I'm guessing it will run constantly albeit at a slower to faster speed when in modes 2-3 rather than in the first position. I'm going to have to do some more research then, you could be right with regards to a crossed wire. I'll be honest I'm more surprised it fired up after the first plug in.
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Old 17-09-2017, 10:29 AM
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Geoff, when you say the motor runs constantly I was assuming you meant you couldn't switch if off but are you meaning it just spins one way? If so that's correct the linkage generates the forward and backwards movement for the wiper arms.

The only issue I had was to get them to park in the right position. I overcame that by moving the parking 'lug' on the big gear wheel. It could be done by altering the slot in the linkage where the motor bolts on.

Anyway good luck.
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Old 17-09-2017, 03:26 PM
Geoff-R Geoff-R is offline
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I probably should have clarified, it runs as you would expect, responds to the input via the stalk so I suppose it all runs as it should then? I'm going to have to mount the motor before I see how it parks, not sure I'll find the time today. Cheers for the tips Rob.
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