Turn signal control

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Turn signal control

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Turn signal control

Postby elmer » September 25th, 2017, 5:28 pm

Hello everyone. I have had some problems with the turn signals of my A2 and I would like if someone can confirm if this connector (pic) is correctly made. I do not see A overlaping with the A in the control.Into the control I think it overlaps with the mark/line(up on the pic) . I will try with a new control and I would like to be sure that I have the connector well done.
Thank you

elmer

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Last edited by elmer on September 27th, 2017, 11:22 am, edited 1 time in total.
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Re: Turn signal control

Postby Mark » September 25th, 2017, 8:01 pm

I would make sure the control is grounded
mark


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Re: Turn signal control

Postby kmam » September 25th, 2017, 10:18 pm

Depends on what the trouble is. The turn control has a cam rotated by the lever. That cam operates against several leaf contacts and turns on one group for left turn, another group for right turn and all for hazard warning. some of the leaf contacts are also connected at rest. Between the leaf contacts and the frame there is a mica type insulator that stops some from touching the frame and allows other to make contact at rest as I just mentioned.

Now there are two potential problems: the mica has a tendency to disintegrate which will cause unpredictable results and the leaf contacts can corrode causing a resistance and thus voltage drop/loss. You may also find general corrosion on the body and circuit board.

The symptoms in my case were a sudden loss of turn indicators on the passenger side both front and rear. Checking the voltage at the bulbs showed some volts but it was not enough to operate the lights. Cleaning the contacts, case and board fixed that but in the process the mica collapsed so now I have to make a new insulator.

Thing is, the turn switch will not fire springs and bits in all directions if you open it and it is repairable.
Howard

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Re: Turn signal control

Postby elmer » September 26th, 2017, 2:57 am

I had exactly the same fault as you. The two turn signals on the passenger side, right and left, did not work. I disassemble it and after many hours testing and adjusting it, I got the rear turn light also works well, but the one from the front is impossible fix it. at the end I asked in murray a new control but I realized that my conecror did not have the cable A aligned with the notch and I have doubts if it is well.
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Re: Turn signal control

Postby elmer » September 27th, 2017, 11:17 am

I found a pic of the connector on the internet and ... ¡ it is the same as the mine !. The holes perfectly match with my connector and in both the holes are placed in the same position in relation to the notch.
I also put some pics of the inside of the control in case someone is interested to see it
elmer


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Re: Turn signal control

Postby rickf » September 27th, 2017, 1:14 pm

It looks like the connectors in your plug are worn out and possibly not making contact.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
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Re: Turn signal control

Postby fowlercal » September 27th, 2017, 10:38 pm

Kman,

What are you going to use to replace the Mica??

Cal
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Re: Turn signal control

Postby kmam » September 28th, 2017, 12:01 am

Still looking for something suitable...
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Re: Turn signal control

Postby kmam » September 29th, 2017, 5:12 am

I made a replacement by cutting up and drilling a loyalty card but I fear it may move so am thinking of using gaffer tape. The replacement works OK with 4mm holes properly located but I had to clean the wiper contacts with a points file.

For what it is worth, here are the connections:

Pin Cable ID Function
A 460 RH Front flasher
B 461 LH Front flasher
C 22 461 LH Rear flasher
D 22 Power??? Negative???
E 22 460 RH Rear flasher
F B Flasher Unit
G 467 Power??? Positive???
H A Flasher Unit

Left Flasher Selected:
A and E are connected to H
F is connected to G

Right Flasher selected
B and C are connected to H
F is connected to G

Hazard Lights
A. E. B. C are connected to H
F is connected to G

When a turn light is not selected its connections (A, E or B,C) are connected to D. On reflection this may not be right - it is what I wrote on my notes but I will need to disassemble and check.

If the innards are totally cactus then using this info it would be possible to make up a working replacement.

Howard
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Re: Turn signal control

Postby elmer » October 20th, 2017, 4:54 pm

Hello everybody, I am still trying to solve a problem with the turn signal of my M151 A2 and I have discovered this:
I used a tester to check the continuity of the turn signal cables and I have seen that if I put a test lead in A of the connector and the other in 460 there is continuity but if I play negative also makes a sign of continuity .. I have also been able to verify that if for example I put a lead in A and the other in B there is also continuity.
Can this be correct or do I have a problem with the connector?
thank you for your help

Elmer
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Re: Turn signal control

Postby rickf » October 20th, 2017, 5:50 pm

If you are checking the connector that runs out to the lights then you are checking continuity through the bulb and back on the ground. You would have to remove the bulbs from the sockets to do a real check. And remember that your brake lights tie into the turn signal circuit for the rear.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
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Re: Turn signal control

Postby elmer » October 20th, 2017, 6:32 pm

Hello rickf,II completely agree with you. I had not thought about the bulb.Thank you for having opened my eyes.
The problem is that I installed a new turn signal control and Turn signals on the right don’t work and so I was doing the tests. I will continue to check the connections tomorrow because I do not understand what may be happening.any ideas?
Thanks

Elmer
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Re: Turn signal control

Postby rickf » October 20th, 2017, 6:50 pm

That will be your A and E circuits on the turn signal unit if I remember correctly. I would take the plug off and apply 24 volts to those circuits one at a time with a jumper wire and see if the corresponding light powers up, A or 460 for the front light and E or 22-460 for the back light. If the lights come on then the wiring is good and can be ruled out. At that point I would say the wiper in the signal that slides across the terminals is probably bad. Those turn signal units are not expensive not are they hard to find. They were used on all M series for 30 years.

I am going on the assumption that all of the other functions are working. What happens if you put it in four way flasher mode? Do you still only have the left side lights?
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
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Re: Turn signal control

Postby Mark » October 20th, 2017, 7:26 pm

I don't know if I am saying something that has already been mentioned, but here goes;on my A2 when it sets a while, then I drive it, the blinkers don't work, so I
push the blinker lever up and down to the limits faster than slow, to clean the contacts several times. Then the blinkers work
mark


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1960 m151
1976 m151A2
1964 m416
1971 m416
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Re: Turn signal control

Postby elmer » October 21st, 2017, 6:29 am

thanks to your advice I have discovered the problem. I checked all the wiring and everything was correct. The problem was in the connector. The hole A (460) is crossed inside the connector and it is the cause of the problem.
I have already ordered a new set of cables and I will change it. Now everything works fine except the right front.I’be disconnected the wire. I've seen a set of cables in TJ murray (part 11630528). Description writes that it is for M151A1. Do you know if it's the same set of cables for A2?
Thank for all
Elmer
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