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Old 10-20-2002, 07:31 AM
shortbed's Avatar
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Lightbulb not bright

I have a '79 chevy short wheel base truck and cannot get the tail lights to shine bright enough to put the thing on the road.I've changed the bulbs in the whole truck and checked the ground on the battery and the frame still no luck.The truck is mint.Can anybody help. thanks.

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Old 10-20-2002, 08:24 AM
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Run a temporary ground from the tailight socket to a good ground on the frame. Make sure it is clean bare metal then see what you got. If they do brighten up then you will have to run a permanent ground because you have a broke wire somewhere in the harness or you are not grounding good from the tailight assembly to the body.

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Old 10-26-2002, 09:29 AM
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Could also be that the hot wire is being shared with something else sucking all the juice from it.

If you have a multimeter or volt meter, remove the bulb from the socket and check voltage there.

When looking in the socket, if there is one metal circle in the bottom of the socket, that is the positive, the negative is the socket itself.

If there are two metal circles on the bottom, then one is positive and the other negative.

With the vehicle off, and just running lights (no head lights) you should be getting about 12 to 13 volts. With head lights on you could get anywhere from 11 to 13.

Let me know how this goes
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