Strange light - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rsmarr1982 · 08-20-2016, 06:07 PM

Took the cluster out of my 72 k20 and found this strange bulb and socket . Anyone know what it's too?

**dflarsen77** · 08-20-2016, 06:21 PM

Looks like the one for the fiber optic line to the trans indicator.

rsmarr1982 · 08-20-2016, 06:29 PM

Quote:

Originally Posted by dflarsen77

Looks like the one for the fiber optic line to the trans indicator.

Does it go inside the column?

**Ironhorse** · 08-20-2016, 08:16 PM

Quote:

Originally Posted by dflarsen77

Looks like the one for the fiber optic line to the trans indicator.

What he said, fiber optic wire for the trans. shift indicator on the non tilt column. Do a "fiber optic wire " search. It does go in the column and thru the shift indicator housing to light up the shift dial. Not really very bright but it works. Tilt columns use a different set up.

Tumbleweed1C4 · 08-20-2016, 11:22 PM

To clarify, the bulb in your hand with the wire attached goes in your gauge cluster. It is one of the lights for the cluster with the added function of the fiber optic gathering light from the bulb and delivering it at the other end of the wire to your shift pointer.

08-20-2016, 06:07 PM	#1
rsmarr1982 Registered User Join Date: Jul 2010 Location: mogadore ohio Posts: 867	Strange light Took the cluster out of my 72 k20 and found this strange bulb and socket . Anyone know what it's too? Attached Images __________________ 1969 chevy c10 lwb stepside 250 6 3 ott 1971 chevy c10 lwb 250 6 with power steering 3 ott 1972 chevy k20 4x4 350/TH350 automatic 1978 chevy Malibu 4dr 305 2bbl (all original) 1979 chevy k10 Scottsdale 350/th350 full-time 4wd(daily driver)

08-20-2016, 06:21 PM	#2
dflarsen77 Active Member Join Date: Jun 2016 Location: Salida, CA Posts: 177	Re: Strange light Looks like the one for the fiber optic line to the trans indicator. __________________ David Larsen 1970 Chevrolet C-10

08-20-2016, 11:22 PM	#5
Tumbleweed1C4 Registered User Join Date: Jan 2014 Location: Gaylord, Michigan Posts: 127	Re: Strange light To clarify, the bulb in your hand with the wire attached goes in your gauge cluster. It is one of the lights for the cluster with the added function of the fiber optic gathering light from the bulb and delivering it at the other end of the wire to your shift pointer. __________________ Sleep safe in your beds because rough men stand ready in the night to visit violence on those who would do you harm 72 K5 Blazer 72 K10 SWB (in pieces under slow construction!) 72 K20



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.