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Need help with a simple circuit for the wipers.

It's a Toyota Corolla wiper motor
Blue is power feed
Blue black is low speed
Blue Orange is high speed
Blue white is the Park circuit that runs off the internal cam. It goes hot when the motor comes on and stays hot until the cam breaks the circuit; when the cam breaks the circuit it is direct to ground.

I'm TRYING to have a simple toggle switch for low speed and high speed and would like to get the park to function.
Maybe it's too many days staring at wires, but I can't get my head around it.

Help please

I have DPDT and SPDT switches handy plus an assortment of single pole relays.

_________________
Too much week, not enough weekend.

OOPS I did it again
http://www.locostusa.com/forums/viewtopic.php?f=35&t=17496

Blood Sweat and Beers
http://www.locostusa.com/forums/viewtopic.php?f=35&t=15216

OK, not the exact same but. ..

http://www.locostusa.com/forums/viewtopic.php?f=44&t=12559

(wiring colors are from a Hilux wiper motor and a Corolla control stalk)

Page 40 of this may help as well.
http://www.autoshop101.com/forms/allinone.pdf

_________________
"There are times when a broken tool is better than a sound one, or a twisted personality more useful than a whole one.
For instance, a whole beer bottle isn't half the weapon that half a beer bottle is ..." Randall Garrett

Hi and lo give those speeds while the other wire only powers it if it is not parked, so it continues to run until parked after it is shut off.

If there is no separate ground wire, then blue/white should be the ground. I assume when you say it goes to ground you are checking between blue/white and the motor case.

To be sure, hook it all up as shown except for the blue/white wire. If it doesn't work at all, ground blue /white.

There is a separate ground wire White black. I have white black to chassis ground

brain is fried today. It must have been 100 degrees in the garage this afternoon

_________________
Too much week, not enough weekend.

OOPS I did it again
http://www.locostusa.com/forums/viewtopic.php?f=35&t=17496

Blood Sweat and Beers
http://www.locostusa.com/forums/viewtopic.php?f=35&t=15216

Okay, don't connect the blue/white.
Blue should be the park wire in my diagram.

Across a battery, run the motor in hi or lo for a second to get it out of park.
Then connect blue and ground. It should return to park.

This is what I'm dealing with



I have a switched power feed on the new harness.

Right now I send that switched power to common on a SPDT
I connected Lo to one pole and Hi to the other. Motor runs in low or high but doesnt park

I can move it off park with by turning the SPDT to OFF and then return the motor to park in low by touching blue white to the LO pole on the SPDT or to park in high speed by touching the blue white to the HI pole on the SPDT.

_________________
Too much week, not enough weekend.

OOPS I did it again
http://www.locostusa.com/forums/viewtopic.php?f=35&t=17496

Blood Sweat and Beers
http://www.locostusa.com/forums/viewtopic.php?f=35&t=15216

WB ground
LW do not use
L "park" in my diagram
LO and LB are high and low.

To test, connect
WB to batt neg
LO or LB to batt pos for a second to get out of park
leave WB connected
Connect L and it should return to park and stop.

no joy

I tied L to power feed. Both to common on the switch

switch to lo, moves at lo, switch to off, stops dead in it's tracks. can touch LW to lo and it moves to park

_________________
Too much week, not enough weekend.

OOPS I did it again
http://www.locostusa.com/forums/viewtopic.php?f=35&t=17496

Blood Sweat and Beers
http://www.locostusa.com/forums/viewtopic.php?f=35&t=15216

thought I had it using a DPDT

Tried making a park circuit on the second set of poles. POP. glad fuses are cheap

_________________
Too much week, not enough weekend.

OOPS I did it again
http://www.locostusa.com/forums/viewtopic.php?f=35&t=17496

Blood Sweat and Beers
http://www.locostusa.com/forums/viewtopic.php?f=35&t=15216

Your first post states LW goes positive when the motor is not in park.
If the switch has applied L to LB (low speed), it won't be in park, so power would already be present at LW.
If it were in park LB would short because you said LW is grounded in park.

Try testing it the way I described without the switch.

Here's how it looks to me.........
L is always hot.
When the cam is "on" it runs power from L>(unamed internal pin)>S>LW and when the cam is "off" it breaks the circuit, parking the wiper and grounding LW>S>E>WB.
Motor is grounded as (internal pin)>E>WB, I don't understand why you would ground LW when off but that probably isn't important since I don't understand a lot of things.
Maybe signal from the washer switch?
Anyways, the L>(unamed internal pin)>S>LW>LB route creates a latch until end of travel circuit using low speed. I don't know if the stock switch breaks LW/LB when it's turned on but it directly powers either LO or LB which means it would override the end of travel signal. Hmm, it must break the LW>LB connection when on or it would go zap every time it passed park.
Here's where I get kinda foggy. ..


At least I think that's it. When parked does WB go ground or does it show motor winding resistance?

edit>> on third look I bet each rectangle on the switch (with the lines and circles) is a switch position. ..

_________________
"There are times when a broken tool is better than a sound one, or a twisted personality more useful than a whole one.
For instance, a whole beer bottle isn't half the weapon that half a beer bottle is ..." Randall Garrett

Try;
Power switch is DPDT,turns off LW>LB and turns on L terminal to speed selector switch input when activated.
Speed selector switch is SPDT switching output of power switch between LB and LO.
Connect the motor L terminal as well as the switch L terminal to B+ and WB to ground.
If I'm right, that'll do it with a working park function.
I suspect that running the washer pump ground to the LB terminal will bump the motor forward at a verrry slow speed until it "comes on the cam" then it runs on low until the cam reaches the park position again.

_________________
"There are times when a broken tool is better than a sound one, or a twisted personality more useful than a whole one.
For instance, a whole beer bottle isn't half the weapon that half a beer bottle is ..." Randall Garrett

So, if it is 3 position for off/low/high, then in off, LW and LO are connected and if the motor isn't in park, L through the motor connects to LW which connects to LO, driving until the cam disconnects L and connects WB (ground) in the park position.

Busy said blue orange (LO) was high speed, but maybe it is actually low speed.

So with a DPDT on/on/on, it depends on the type of dpdt switch you have.

Make a truth table for the connections in each switch position.
Then we can figure out the connections, but you need to connect LW and LO in the "wiper OFF" position.

I see OldeJack replied also while I was typing.

Will start back at it tomorrow. Right now I'm whipped. I spent about 9 1/2 hours out in the heat and humidity today.

_________________
Too much week, not enough weekend.

OOPS I did it again
http://www.locostusa.com/forums/viewtopic.php?f=35&t=17496

Blood Sweat and Beers
http://www.locostusa.com/forums/viewtopic.php?f=35&t=15216

Hmmmm good idea...

in park;
S>1 on
1>B off
2>B off

in low;
S>1 off
1>B on
2>B off

in high;
S>1 off
1>B off
2>B on

sounds like a DP3T would do the trick just fine with two jumper wires.

_________________
"There are times when a broken tool is better than a sound one, or a twisted personality more useful than a whole one.
For instance, a whole beer bottle isn't half the weapon that half a beer bottle is ..." Randall Garrett