Main.TrailIndexPage | Electrical Systems | Electrical.Lights | Emergency light under the hood

Emergency under-the-hood light

This component is part of Lights.


  • Its technical name & common name(s)
  • part # - start year & end year


Describe common maintenance procedures, and common faults that may occur. Describe how these may be diagnosed and resolved. Again, include diagrams, photographs and explanations. Where possible, include measures, tolerances, weights etc.

  • Symptoms when it faults
  • How to test if it is faulty - what tools to use
  • How to fix / change

Link to related components where appropriate.

Old Yahoo content

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Regarding the socket or plug in the engine bay side of the firewall next to the fuse box. It has a hinged plastic cap that covers it. What is that for? It looks like something electrical plugs in there.

Will Samples says: the electric plug on firewall is for plugging in a troubleshooting light. These lights were available options or aftermarket and were bulbs with a clip and about 15' feet of cord. Plug into the outlet on the firewall (which is live all the time) and you have instant portable light source. The clip allowed you to attach the bulb to the car. Be careful testing, the socket is live all the time.

Anybody know where I can get one of these trouble lights?

Frank Mallory says: They are pretty expensive, and the original type is NLA, but you might be able to get one from Ron Rapp - slautohaus@o...

Pete Lesler: Bob and all: the correct Bosch part number for these troube lights is 0 310 500 007. It was still available until about 8 years ago from any Bosch retailer. At the time for around $50. It is designed for any of the Mercedes underhood sockets in the decades of the 50's and 60's and up to the last 280SL made. If you find one in the original bubble wrap, you will see photos on the back side of the packaging showing applications of the handlamp with W113 cars only. If you find a supply of these please let me know. Some obscure Bosch retailers might still have them.

I have placed 2 photos of this part on the site but I need someone to load them so that everyone can see them. I have 3 different lights that I will try to post for all to see soon. The two photos are of the Bosch 0 310 500 007 in the original package. (sorry I can't figure out how to post the photos myself) smiledoc
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