C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1993 Interior Lighting Problem

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Old Dec 17, 2009 | 11:23 PM
  #1  
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Default 1993 Interior Lighting Problem

Hi All - this is my first post on the forum, I have mostly been viewing, but it is time for a request for some help!

I have a 1993 LT1, and I have a battery drain issue. The car battery will not last overnight and I have diagnosed it so far to be something from the 20amp Interior Lighting Maxi Fuse under the hood, in the block in front of the Battery. From there I am stuck. I can pull the interior fuse (passenger side door) RH Courtesy and LH Courtesy, but I am not getting the same load difference as pulling just the single Maxi Fuse under the hood.

What circuts run off the Interior Lighting Fuse Under the Hood? I have checked the bulbs, and the lights seem to go off inside the car.

One extra bit of info - The power antenna was replaced a while ago with an aftermarket unit (gotta switch that!!). Is this on the same circut?

Cheers! All help is appreciated!
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Old Dec 18, 2009 | 01:16 AM
  #2  
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I'll guess headlights motors....Try unhooking the plugs to the headlight motors and see what happens

Just a guess.
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Old Dec 18, 2009 | 04:11 AM
  #3  
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Originally Posted by BryA
Hi All - this is my first post on the forum, I have mostly been viewing, but it is time for a request for some help!

I have a 1993 LT1, and I have a battery drain issue. The car battery will not last overnight and I have diagnosed it so far to be something from the 20amp Interior Lighting Maxi Fuse under the hood, in the block in front of the Battery. From there I am stuck. I can pull the interior fuse (passenger side door) RH Courtesy and LH Courtesy, but I am not getting the same load difference as pulling just the single Maxi Fuse under the hood.

What circuts run off the Interior Lighting Fuse Under the Hood? I have checked the bulbs, and the lights seem to go off inside the car.

One extra bit of info - The power antenna was replaced a while ago with an aftermarket unit (gotta switch that!!). Is this on the same circut?

Cheers! All help is appreciated!
In addition to the RH Courtesy and LH Courtesy fuses, the 20 AMP Maxi fuse also powers the following 5 amp fuses, RH Illumination and LH Illumination, LCD fuse, CCM#2 fuse, RDO batt fuse, and console illumination.
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Old Dec 18, 2009 | 07:26 AM
  #4  
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Awesome - So I am going to try all of those. Can I assume that pulling these fuses, I should see the same impact on my test light? (I have the Negative battery cable disconnected, and the test light in series between the terminal and the cable). When I pulled the 20amp MAXI that light would DIM...
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Old Dec 25, 2012 | 04:47 PM
  #5  
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Originally Posted by BryA
Awesome - So I am going to try all of those. Can I assume that pulling these fuses, I should see the same impact on my test light? (I have the Negative battery cable disconnected, and the test light in series between the terminal and the cable). When I pulled the 20amp MAXI that light would DIM...
I'm having this exact problem. Did you find the culprit?
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