just wondering which wire could be crossed or which circuit i need to try and trace down to solve this problem
m38 headlight wiring
- 1948willyman
- Contributor

- Posts: 77
- Joined: Wed Jun 17, 2009 6:00 pm
- Location: North Carolina
m38 headlight wiring
When the headlights are on dim the bright light indicator is illuminated
just wondering which wire could be crossed or which circuit i need to try and trace down to solve this problem
just wondering which wire could be crossed or which circuit i need to try and trace down to solve this problem
- jimm
- Active Member

- Posts: 202
- Joined: Mon Oct 31, 2011 6:00 pm
- Location: Escondido, CA
There is a color-coded wiring diagram available in the Downloads area under M38/Electrical that should help you track dwon where the indicator should be connected (wire #17), assuming you have a stock wiring system. Probably just needs to be connected to the other output terminal of the dimmer switch.
Jim McKim
1952 M38 son-father project
Slowly turning rusty parts into OD parts
1952 M38 son-father project
Slowly turning rusty parts into OD parts
- wesk
- Site Administrator

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- Location: Wisconsin
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Most likely you have 17 from the hi beam indicator lamp connected to 18 on the dimmer switch. 17 from the headlight and 17 from the high beam indicator belong together at the dimmer switch. 16 is power to the dimmer switch from the light switch. 18 is low beam from the dimmer switch to the headlights.When the headlights are on dim the bright light indicator is illuminated

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. ... _album.php
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. ... _album.php