wiper motor/upgrade question

[4th effie n counting]

So if you saw my general post you know i got a wiper motor, the relay, and switch from a 76.
No good and i'm not sure which is bad, i grabbed an extra switch also. so i have 3 switches 2 motors and 1 relay. Problem is that relay will only plug into the switch from the 76 not into my 67 switch or the other switch from the 67 f250 cs.
what do you suppose the odds are for my having 3 bad switches? the only thing i get is a humming noise from dash area that is with my original (thought bad) motor and switch. nothing with any other combination.
maybe someone can point me to the switch testing page. or tell me which wires to hook straight to battery to test motor.

thanks and

[kaptnkaos]

didn't see yer original post...

Is yer motor bad? I'm not sure if the motors are interchangeable.
You need to use the switch that came with the relay.
The switch plugs into the relay and the relay will plug into the stock bump connector...
I did this on on my '68 CS one of the best upgrades I have made so far.

KaptnKA S

[4th effie n counting]

well according to advance oreilly all f100 from 67-79 call for same motor. but you know computers...
actually now that i think about it the position of the arm was off on the one i bought today. couldn't get the lower left bolt started due to arm blocking hole. hmmmm

[l1k2gadd]

Remember, the motor turns, I believe in a 360 degree motion, and the wiper arms are pushed back and forth by the linkage rods that connect to the motor.

When you installed the motor did you hot-test it before you connected the wiper linkage arms to it? In other words did you see if the motor worked okay sitting on the bracket by itself without anything connected to it?

Did you reinstall the wiper linkage arms in the correct order, as they were removed, or did you put them back on out of the original order? I believe there will be two of them, one for the right wiper and one for the left.

When the wiper linkages were off did you check to see if both wiper arms moved freely? There could still be a bad "wiper transmission" or the thing the wipers pivot on out in front of the windshield.

Remember, any moving part could be causing the motor to bind up. A wiper linkage arm hitting something under the dash (like a cable, a part of the wiring harness, or anything solid).

[4th effie n counting]

I tried hooking up the motor while it lay in the floorboard. I tried 2 switches to my original motor and all 3 to the motor i got at junkyard. I will post tomorrow pics of the switches. I do have one ? on the wiring. When i removed my old switch there was the plug from the motor 4 wires;1 black wire independent of the plug; 1 black with white stripe. both of these had female terminals? and there was 1 orange w white stripe, which runs right up into the harness. is this right?
the reason i ask the 76 had a thick black wire from the harness with green stripe that had one of those 3 hole female bullet connector thingys on it, and the orange wire from the switch went into it.

[kaptnkaos]

Hey 4th effie n counting...

Give Thunderfoot a PM.
He knows these things pretty much inside out and I'm sure he'd be glad ta help you figure this out...
I do know that the relay itself needs to have good ground before it will work.

KaptnKA S

[fordman]

the 67-79 motors are the same for sure. i have a 69 and a 78 motor and they are exactly the same as the one in my 67 and the others i have seen in 79's if a motor just hums it could use just a push to get it started. if that doesnt work try a different motor. the two speed switches have a small bump on the side of them. thatpiece is kind of like a fuse. if it is melted on that point or you can see it burnt through then the switch is no good. i dont think the wiper delay switch will interchange witha two speed wiper switch. so it could be that your delay switch is bad also. i dont know how to check the delay box.

[4th effie n counting]

thanks that makes sense.
On a side note that bugger of a clip was a piece of cake today, after finally figuring out how it worked. i bet it only took 2 minutes to undo clip and about 10 for motor removal, mostly because they line vehicles up so only one door opens, in this case passenger door couldnt lay on my right side grrrr

[4th effie n counting]

so i just called advance to price a new switch... 54 bucks, a dollar more than their reman motors. I initially wanted the junkyard route just for fun. now its a mater of economics!

[FORDification]

The bumpside switch won't work with the delay setup. Think about it...you have to turn the wiper switch to the left to activate the delay feature. Does your bumpside switch do that?

[4th effie n counting]

It might if i get the "vise grips" to it
I can use up to a 77 switch right? without moving a wire.

[Thunderfoot]

Hey 4th effie n counting, got your pm

I take it that your wipers were not working / missing when you got the truck?

You can check the motor by grounding the motor housing itself and put 12V to the White or the Blue wire and the motor should run...
I have some diagrams that I have modified some to make them more clearer here below. The one on the stock switch has an explanation as to what is doing what and you can apply this to the one for the intermittent switch as the only difference is the control box for the intermittent part and the switch in the dash being different to control it.

The 2 separate wires that you have on your truck with the female connectors are for the washer motor power and wire to the pump... 67 is a little different here with these wires not being in a connector together but you should still be able to connect them to the plug I think...

You can use a test light on the switch to check it using the diagrams I have here... If you have any questions let me know and I'll explain more in detail.

This is the 67 wiper digram from the site here http://www.fordification.com/images/sch ... wipers.jpg

These are the ones that I have modified (Click to open and expand them).

[FORDification]

... I can use up to a 77 switch right? without moving a wire.

You HAVE to use a switch specific for the delayed wiper setup. Any delayed-wiper switch up through '86 will work, though the '80-'86 switches require one wire to be moved.

[4th effie n counting]

ok i just tried putting 12v to it hooked to ign source.grounded motor to floorboard, and yippee! on the down side when i tried using the switch with delay setup on high it worked but tried hanging up, gave me nothing on low.
i'm about to install it now. Just out of curiosity does bolting it in ground it? If so i'm a twit and both the other motors might have been good
Using the above method i determined that at least 2 of my now 4 switches are good . More in just a few minutes after i put motor in. Thanks a lot
Thunderfoot!

[4th effie n counting]

Alrighty then! I have wipers now, just have to wire on a female connector.
I'm sure i will be changing switch as soon as i find another delay setup.

On a side note, i think i'm now a pro at R&R of a wiper motor.
When i got this one from a 72, I had to remove cluster, ducting, and motor in 10 minutes. Yard was about to close.