Rear Wiper Intermittent Delay Timer Mod

[MickZEL]

Originally Posted by toy_toronto

^ and the possibilities are endless! :)


I'm not actually 100% sure yet if the stalk I have on order from a 2004-07 RX330 would work since everyone seems to have a Prius one.




I'm really hoping it works so I won't need to install a toggle switch or get another module *crossed fingers*



-toy

This is an interesting feature I really miss her. In anticipation of the photo.
At Nissan, I had this feature.

[Lil Abner]

Yeah, that one looks like it will work. I actually purchased a brand new one from the OEM part number, which fits a variety of cars.

Well, I got my circuit board all soldered-up. I tested it in the car, and it works nice. I just need to snap some pics, wire it into the car, then post up my results. Hopefully soon, cause I'm hungry!!

[Lil Abner]

I don't want to hijack your thread, so I created a new one with the module I made:
http://www.yarisworld.com/forums/sho...209#post596209

[Lil Abner]

Well, I know if the "ON" pulse isn't long enough, the motor will stick. Looking at your schematic, R4 and C2 control your "ON" pulse. The equation for time is:
T(on)=0.7*R*C
R4=10K ohms, C2=100uF=0.0001F
T(on)=0.7*10,000*0.0001
T(on)=0.7 sec

The only think I can think of is replacing R4 with a resistor around 14.7K or 15K. That would give about 1 second. Or just try that equation out and see.

Since you have the wires taken apart, you could also try this. Turn the wipers on low (not delay), and leave the wires disconnected. Quickly jump the blue wires together, and quickly disconnect. Try doing that slightly longer each time, until the wipers work properly. What you're trying to determine is the required ON pulse length needed by your module.

When I did my module, I only worried about the rear wiper, so I don't have any timing numbers for the front.

So you got the EWD for that switch? I'd hope it's simple, like you're saying, to just supply a ground and/or positive to one or all of those 3 little pins on the larger plug!

[toy_toronto]

Originally Posted by Lil Abner

Well, I know if the "ON" pulse isn't long enough, the motor will stick. Looking at your schematic, R4 and C2 control your "ON" pulse. The equation for time is:
T(on)=0.7*R*C
R4=10K ohms, C2=100uF=0.0001F
T(on)=0.7*10,000*0.0001
T(on)=0.7 sec

The only think I can think of is replacing R4 with a resistor around 14.7K or 15K. That would give about 1 second. Or just try that equation out and see.

Hey lil'abner, thanks for your suggestions. I actually tried using both the module and simulated ON pulses by hand (shorting the wires with different delays) and the wiper arm position remained in odd positions whenever I interrupted the connection.

So you got the EWD for that switch? I'd hope it's simple, like you're saying, to just supply a ground and/or positive to one or all of those 3 little pins on the larger plug!

No, lol. I was looking at the EWD of the OEM wiper switch.


-toy

[birdman]

wow I want the adjustable speed intermittent rear wiper too. You guys are so smart!

[birdman]

Sure would be nice if someone would use pictures and language that actually shows how to install the switch that anyone can understand and not just advanced folks. I can follow directions that show wires in the colors that match the descriptions. Where the red wire and ground wires go etc. As it is I'm totally lost.

[ercdvs]

Going to bump up this old thread as I was using the exact module listed.

Is it possible to have it ONLY work with the 'low' rear wiper setting with a Prius stalk? It seems this is geared to just having the wiper on.

12v+ from pin 6
12v - to white / black ground (pin 3 using the pinout on page 1)
the com output to the blue wire (pin 7 )

Going the other way putting 12v+ from the stalk seems to want to run the relay all the time, which is not something I want to hear all the time.

Anybody have luck with this ? Can anyone also recommend the proper pin to fit that absurdly small socket on the harness for pin 6 ?

[invader166]

I've done this mod a couple years back with a Prius stalk too.

To answer your question, yes! It is possible. That's how I have it set-up on mine. The problem i ran into though is the pin for the rear wiper connector. I ended up paying $40+ for it because it's Toyota exclusive, and you can't seem to get anywhere else but the dealership.

You might have better luck finding it online though. I was in a bit of a rush, and never really bothered to check.

The part number is: 82998-24290. It's a direct fit for pin 6 of the connector.

[CTScott]

Originally Posted by invader166

I've done this mod a couple years back with a Prius stalk too.

To answer your question, yes! It is possible. That's how I have it set-up on mine. The problem i ran into though is the pin for the rear wiper connector. I ended up paying $40+ for it because it's Toyota exclusive, and you can't seem to get anywhere else but the dealership.

You might have better luck finding it online though. I was in a bit of a rush, and never really bothered to check.

The part number is: 82998-24290. It's a direct fit for pin 6 of the connector.

I have the pins on hand if anyone needs them and I only charge $3 each for them.

[ercdvs]

Originally Posted by CTScott

I have the pins on hand if anyone needs them and I only charge $3 each for them.

Just the absurd small ones or the 'normal' pins as well. i might as well do some proper wiring vs my inserts.

I'll send you a PM

invader166 would you mind posting how you wired this ? Was my description correct?

[invader166]

Originally Posted by ercdvs

Just the absurd small ones or the 'normal' pins as well. i might as well do some proper wiring vs my inserts.

I'll send you a PM

invader166 would you mind posting how you wired this ? Was my description correct?

You bet! I'll post how I did the wiring in the next few days or so. I'm currently away since I do travel a lot because of my job.

Generally speaking, the relay only comes on for 1/2 a second or so, to get the wiper moving. It will return to it's original position as a result of the eccentric cam profile of the motor. You do hear it click on and off when it operates.

I guess you can also make/buy an enclosure for it, to not have all the circuitry exposed, but it's completely up to you. I never really bothered with that, and ended up mounting underneath the steering column, hidden from view, but still able to access it to adjust the timing with relative ease.