Under-hood light not working?

Tiny
JIM MCKEE2
  • MEMBER
  • 1996 CHEVROLET S-10
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
My under-hood light was working then it’s not. Changed the bulb. Still not working. Where would I start?
Thanks in advance.
Monday, August 15th, 2022 AT 3:12 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

I attached the wiring schematic for the under-hood light. Power comes from fuse 3 (parking lamp fuse) in the instrument panel fuse box. From there, power goes to the light/switch via an orange wire.

Here is what I need you to check: First, confirm the fuse is good and has power to and from it. Here is a link to help:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuse is good and has power in and out, go to the light and disconnect the connector. Check the orange wire for 12v power. If it has power, check the black wire for continuity to ground. Here is a link to help with testing wiring:

https://www.2carpros.com/articles/how-to-check-wiring

Do this and let me know the results.

Take care,

Joe

See pics below. Note: I had to cut the schematic in half to make it readable. I did overlap them so you can follow from one to the next. Also, the last pic shows which fuse to check.
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Monday, August 15th, 2022 AT 8:49 PM
Tiny
JIM MCKEE2
  • MEMBER
  • 6 POSTS
Thanks for the fast reply! I will get on my big computer and get some old style print instead of this dinky phone. I appreciate your time and effort!
Jim
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Monday, August 15th, 2022 AT 8:54 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

You are very welcome. Let me know what you find or if you have other questions.

Take care,

Joe
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Monday, August 15th, 2022 AT 10:48 PM
Tiny
JIM MCKEE2
  • MEMBER
  • 6 POSTS
Thanks for the diagram. I followed the path and found a little glitch in the path. There is a port right before the light fixture. It had come apart and that was the problem. Have to make sure and not break the brittle vacuum line! Oops! I’ll try and include a couple of pics. Thanks! I have this forum book marked for sure.
Next is to replace the HVAC blower and resistor.
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Tuesday, August 16th, 2022 AT 9:06 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

You are very welcome and I'm glad to hear you found the problem. As far as the blower motor and resister, no problem. Let us know when you're ready.

Take care and please feel free to come back anytime in the future. You're always welcome here.

Joe
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Tuesday, August 16th, 2022 AT 9:18 PM

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