WiringEwectwic Wipers

[LandCruiserSteve]

Steve I will post a piture of how the wirng harness run with the TNK wipers from my 45 next week so you know how they were run from the factory. If yours had two wiper switches it may have been run up each side too. On the inside of the windshisld frame they should be some small holes for the screws tjat held the clamps for the wiring harness.

Thanks, John. I'll hold off on changing anything until I see what you post. From what you're describing, it's very possible that the way it's wired right now, might be the original factory configuration for a non-USA 25 with TNKs.

Does your windshield have them on both sides or just one?

Yes, the wiring goes up both sides of the windshield for both wiper motors with the little clamps holding them in place. (I'll post some close-ups later today.)

 

[LandCruiserSteve]

If yours had two wiper switches it may have been run up each side too. On the inside of the windshisld frame they should be some small holes for the screws that held the clamps for the wiring harness. Does your windshield have them on both sides or just one?

Yep, mine has the wiring going up both sides, along with the clamps.

Think it's factory??

 

[Cruiser_Nerd]

Steve, that's the way the vacuum tubing was run. It came up the hole in the cowl on the left side, then a tee inside the frame and came out the two holes just like your wiring.

 

[LandCruiserSteve]

Ah, ha!! That explains that particular routing. Still, I wonder if mine ever had vacuum wipers, or if they were just the old style TNKs to begin with.

 

[LandCruiserSteve]

Send those things out to me to try and rebuild. I might even be able to rob parts from the later style to get them working again.

John, PM me your address again and I'll get these out to you.

 

[Living in the Past]

Steve I will PM you my address. But with all the strange stuff that's come up on the early 25s do your wiper have a voltage stamped on the housings? My TNKs all have 12V stamped on them. Now that we find out there are a few 6 volt 25s that have been converted like Archie's I don't want to put 12 volts to the wipers and finish them off if there were 6 volt.

John

 

[LandCruiserSteve]

But with all the strange stuff that's come up on the early 25s do your wiper have a voltage stamped on the housings? I don't want to put 12 volts to the wipers and finish them off if there were 6 volt.

I'll check in the morning to see if there's any other markings than just "TNK." As far as worrying about pouring 12 volts into a 6 volt motor, obviously me and the PO have already done that. That's how I found out they didn't work. I'll let you know . . .

 

[Cruiser_Nerd]

They'll just run twice as fast.........................until they burn up. ;p

 

[Living in the Past]

Okay Steve your wiper motors only have two terminals but how many terminals on your wiper switches. If you only have two instead of the three like all the ones I have it would prove even more that they are stock. With two switches there would be no reason for three posts. I pulled the swiitch and wiring harness tonight out of the 1961 FJ40. It is wired like I posted last week for a three terminal switch.


John

 

[LandCruiserSteve]

If you only have two instead of the three like all the ones I have it would prove even more that they are stock.

I'll recheck the switches as well and let you know.

 

[LandCruiserSteve]

They'll just run twice as fast.........................until they burn up. ;p

That accounts for my previous brake problems, too. They were probably 6 volt wheel cylinders running on a 12 volt truck.

Seriously though, I wonder why a PO would've installed 6 volt wiper motors on a truck that's otherwise 12 volts throughout (lighting, instrument cluster, etc.)??

 

[Living in the Past]

I'm not saying a PO installed 6 volt wipers, but being a non USA 25 and finding out there are some 6 volts 25s like Archie's are you sure your's wasn't 6 volt converted to 12 volt. I doubt it but it doesn't hurt to make sure. Besides if it was 6 volt you could install a 6 volt battery to one switch then hook up 12 volt to the other. You could have two speed wipers, at least for a little while

John

 

[LandCruiserSteve]

but being a non USA 25 and finding out there are some 6 volts 25s like Archie's are you sure your's wasn't 6 volt converted to 12 volt. I doubt it but it doesn't hurt to make sure.

Actually, you've got a point there, John. Maybe it is possible that it was once a 6 volt. Since the engine was swapped out to a 135, whoever did that may've converted everything to 12 volt (except the wiper motors).

Come to think of it, that also might be why my temp guage in my gauge cluster still doesn't work right. Nor does the gas gauge work accurately. (Maybe those gauges are expecting a 6 volt feed from the senders rather than the 12 volts that they're now getting.) I suppose it would've been easy enough for a PO to swap out headlight, bib lights and taillight bulbs to accomadate such a transition.

Hmmm . . . . . Now you got me wondering. Any way I can figure out for sure??

 

[FJnotCJ]

Hmmm . . . . . Now you got me wondering. Any way I can figure out for sure??

Get a six volt battery, put it in, see if the gauges work?

 

[LandCruiserSteve]

Get a six volt battery, put it in, see if the gauges work?

Yep, I guess that would be one way. But, I was wondering if there was some nomenclature on the vehicle itself that would specify if it was originally a 6 or 12 volt to begin with. Plus, I don't want to spring for a 6 volt truck battery just to find out. (Unless a couple of lantern batteries would suffice. )

 

[Cruiser_Nerd]

Yep, I guess that would be one way. But, I was wondering if there was some nomenclature on the vehicle itself that would specify if it was originally a 6 or 12 volt to begin with.

Possibly on the back of the gauges, and the original flasher if it's there. I can't remember what's marked on there besides the date. But I really don't think you were 6 volt. Four C or D cells in series give you 6 volts......plenty of juice to test the gauges.

 

[LandCruiserSteve]

But with all the strange stuff that's come up on the early 25s do your wiper have a voltage stamped on the housings? Now that we find out there are a few 6 volt 25s that have been converted like Archie's I don't want to put 12 volts to the wipers and finish them off if there were 6 volt.

Sure enough. I finally got around to checking mine and they're definitely 12 volt.

And, the two individual dash switches are just two posts (SPST).

 

[LandCruiserSteve]

But I really don't think you were 6 volt.

I don't think so either. My guess is that the wiper motors just died from old age.

 

[foxfab]

might try to tackle this today. Did anyone ever draw up a diagram? I have 3 terminal TNK's and a 3 post switch