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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Colby on February 06, 2013, 09:56:14 pm

Title: Tape with a bulb riveted to the dash?
Post by: Colby on February 06, 2013, 09:56:14 pm

What the heck is this?  It is attached right above the wiper switch and has some sort of tape/wire going to a bulb that mounts in the back of the instrument cluster.

(http://i439.photobucket.com/albums/qq119/MtnManCO/Photobucket%20Desktop%20-%20Marcis%20iMac/Truck%20Restoration/IMG_0139_zps7e8a2e36.jpg)

Title: Re: Tape with a bulb riveted to the dash?
Post by: bd on February 06, 2013, 11:30:29 pm

That provides illumination for the wiper switch.  To keep from adding more bulbs to the dash light circuit and overburdening the dimmer, the factory "piped" light from the cluster using the fiber optic ribbon.

Title: Re: Tape with a bulb riveted to the dash?
Post by: Colby on February 07, 2013, 05:59:57 pm

Thanks bd, it never dawned on me that my old truck could possibly have fiber optic technology ;)

Title: Re: Tape with a bulb riveted to the dash?
Post by: Jason S on February 07, 2013, 09:05:40 pm

Just think, for '73 and '74 you could have fiber optics in the dash and points ignition under the hood...

Title: Re: Tape with a bulb riveted to the dash?
Post by: Captkaos on February 08, 2013, 01:39:42 pm

Did the same for the ashtray also...