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Bobber Member
Joined: Feb 09, 2014 Posts: 178 Location: Tri Cities, Washington
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Posted: Fri Jul 01, 2016 12:50 pm Post subject: late style stock 24 volt light switch. |
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When I turn the switch on I hear a springing sound, which I believe is the internal breaker being activated. Then the lights don't work, but every 20 seconds I hear the spring sound and the lights blink and volt Gage needle pulsate back and fourth once. I also read these switches were unserviceable.
Does this all sound like my switch is bad, just checking. Thanks _________________ Rusty, 1952 M38, Koenig hard top. |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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Bobber Member
Joined: Feb 09, 2014 Posts: 178 Location: Tri Cities, Washington
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Posted: Fri Jul 01, 2016 1:49 pm Post subject: |
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Thanks, I'll give it a try. _________________ Rusty, 1952 M38, Koenig hard top. |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16256 Location: Wisconsin
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Posted: Fri Jul 01, 2016 9:27 pm Post subject: |
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We have a case of 1st advice was preceded by 2nd advice. The switches are not very expensive.
1-Yes the switch has an internal circuit breaker.
2-When it persistantly pops then the FIRST step is to check your lighting circuits for a short or overload.
3-If you find a short or overload fix it and try the switch.
4-If you don't find a short or overload my advice is replace the switch. They are not that expensive.
5-If you still must play with the switch then the value of your time will dictate the wiseness of your choice. If you do eliminate the internal circuit breaker make sure you find another way to protect the circuit IE fuse or remote circuit breaker. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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Bobber Member
Joined: Feb 09, 2014 Posts: 178 Location: Tri Cities, Washington
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Posted: Sat Jul 02, 2016 10:29 pm Post subject: |
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I checked each circuit breaker, then removed the light switch and started jumping the hot pin in the plug with a fused jumper and found two pins were shorted out. looked up the pin letter and it told me it was the brake light switch on the master cylinder. Removed it, tested it, then replaced it. Now it all works. The cycling of the circuit breaker had me a little confused, not ever dealing with those. That's why I thought it was a circuit breaker, but when I started moving the load wire from the circuit breaker to the other circuit breaker and the problem followed. Then I expanded my search. Thank you Gentlemen. _________________ Rusty, 1952 M38, Koenig hard top. |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16256 Location: Wisconsin
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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skyjeep50 Member
Joined: Feb 20, 2007 Posts: 606 Location: Illinois
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Posted: Sun Jul 03, 2016 9:15 am Post subject: |
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My '50's M38A1, a 70's bobtail M35 and a 2000's Hummer. All three with the same light switch although the Hummer has push-buttons. Mix the switches around and they all work the same. M-series vehicles - you have to love the interchangeability of some of the parts. No need to fix something that isn't made to fix, replace, that's the way it was designed.
_________________ 1951 M38 |
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Bobber Member
Joined: Feb 09, 2014 Posts: 178 Location: Tri Cities, Washington
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Posted: Sun Jul 03, 2016 4:07 pm Post subject: |
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yes I did use those illustrations, I use a lot of your pictures and illustrations . Thank you for your pictures and information. I haven't seen much jeep stuff around these parts. Maybe I'm not looking in the right spot, I do keep my eyes open for parts though.
Thanks.
Rusty. _________________ Rusty, 1952 M38, Koenig hard top. |
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