Author Topic: I have a short on my fuse panel  (Read 262 times)

CJHenderson

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I have a short on my fuse panel
« on: August 27, 2025, 20:35:58 »
I have a short on my fuse panel for fuse number 7 and 8. Have disconnected everything going into the trunk then started to reinstall one item at a time. First was the trunk light which worked then taillight assembly doing the left one first which popped the #7 fuse followed by the right taillight which popped the #8 fuse. Check that the trunk harness was wired properly at the plug, that checked good. Any suggestions?
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

BobH

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Re: I have a short on my fuse panel
« Reply #1 on: August 27, 2025, 21:03:16 »
Do you have your rear side markers connected, do the fuses blow if you disconnect the side markers?

Also meant to ask, whether the fuses blow straight away when you connect them, or when you turn the lights on?
« Last Edit: August 27, 2025, 21:32:25 by BobH »
February 1965 230SL Automatic
UK delivered RHD
Papyrus white, blue hard top & hub caps
Blue soft top
Blue leather

CJHenderson

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Re: I have a short on my fuse panel
« Reply #2 on: August 27, 2025, 22:26:22 »
The side markers are disconnected. I have some tools coming in the morning that hopefully will make trouble shooting a little easier.
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

waltklatt

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Re: I have a short on my fuse panel
« Reply #3 on: August 27, 2025, 23:02:39 »
Remove the bulbs and check with a volt tester to the bulb contacts.  Maybe a wire is grounded somewhere.  Have had the bulb contacts touching the ground on the bulbs in the past.

WhiteBlue

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Re: I have a short on my fuse panel
« Reply #4 on: August 28, 2025, 00:16:26 »
Check that the short lead leading to the licence plate light has correct polarity. Ensure that the ground lead goes to the licence plate light housing.
Mike WhiteBlue

CJHenderson

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Re: I have a short on my fuse panel
« Reply #5 on: August 28, 2025, 17:08:30 »
Thank you, Mike, for the great advice, the license plate lights were wired backwards on both sides, the problem solved.
« Last Edit: August 28, 2025, 17:28:16 by CJHenderson »
1970 280SL/8 W113 101624 miles.
1950 MG-TD
2021 Harley Davidson CVO Trike

 

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