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Interiors, Dash, Lights and Electrical Everything Inside

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  #1  
Old February 6th, 2017, 06:59 PM
RUSTY 65 305 RUSTY 65 305 is offline
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Default speedometer night light

i have a 65 1000 305v6 stock i have no speedometer lights. i see circuit behind dash on internet diagram.. maybe dumb question Is there speedometer light??.i know generator light works in top left corner
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Old February 6th, 2017, 08:26 PM
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Default Re: speedometer night light

There should be six bulbs and maybe your missing some or they're burned out. That dash lighting is not very bright as is, but there are bulb replacements you can use to increase the lighting. I forget the part number number but I'm sure others will chime in.
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Old February 6th, 2017, 10:09 PM
Texas63GMC Texas63GMC is offline
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Default Re: speedometer night light

the back of the dash has several twist out connections that house the bulbs. make sure they are not burned out. The plastic plug that holds the wiring and pushes into the back of the dash has a number of wires for high beam, turn signal, etc.
on mine the cluster backlight was powered by a grey wire. if the bulbs are good, check that wire a test light. it should be on when the headlight switch is pulled....
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Old February 6th, 2017, 10:24 PM
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Default Re: speedometer night light

Two big things...Grounds and Bulbs. I replaced the burned out bulbs...then had grounding problems. Then suddenly they started working and are fine. lol Once all the bulbs are working visibility is much better, but never as good as a face lit gauge.
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Old February 6th, 2017, 11:01 PM
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Default Re: speedometer night light

Thread link to brighter cluster lights

http://6066gmcclub.com/showthread.ph...Brighter+bulbs
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Old February 7th, 2017, 03:51 AM
RUSTY 65 305 RUSTY 65 305 is offline
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Default Re: speedometer night light

Thx Guys!! i pulled dash and found 6 bulbs..4 exterior bulbs control Gen,Low oil etc.. i guess/assume 2 interior bulbs illuminate speedometer??? i have yet to get these 2 working...bought bulbs today thx again
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Old February 10th, 2017, 02:00 AM
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Default Re: speedometer night light

Don't forget headlight switch my be turned down

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