What is this light for? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

WadmalawJoe · 05-03-2013, 10:13 PM

I took my dash cluster out today to disassemble it, clean it and work on getting my temp gauge to work. I had to unplug a odd wire from the odd connected for a light. What is it?

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Longhorn 70 · 05-03-2013, 10:23 PM

not for sure but under my gas gauge, I have a BRAKE and a TEMP. Could that be it?

**TBONE1964** · 05-03-2013, 10:24 PM

That is for the fiber optic cable to light up the shift indicator on the steering column.

Longhorn 70 · 05-03-2013, 10:51 PM

YES!!! No wonder Mine doesn't work! THANKS.

**TBONE1964** · 05-03-2013, 11:00 PM

It is a great feeling when ALL the lights work. I discovered mine because the light in the dash was burned out and it was the same one for the optic cable. When I replaced it, the shift indicator also worked.

WadmalawJoe · 05-04-2013, 08:14 AM

Thanks Tbone!
I was wondering if that was for that optic cable. The cable is there, but I think the bulb is out, the shift indicator wasn't lit up at all. That cable can't really transfer a whole lot of light anyway can it? I will take that apart and clean it as well. Seems like I read about a led mod you can do for that.

While cleaning and painting inside the dash area with the cluster out, I made an ugly discovery of my wiper motor barely hanging in there. The area around it is severely rusted and you can see out into the cowl area. I'm not looking forward to this repair project.

**TBONE1964** · 05-04-2013, 01:04 PM

One thing to make sure of is that the optic cable is not kinked or has any hard bends in it. That will break the flow of light to the shift indicator. I know they make brighter dash light bulbs also. Not sure of the part number.

Good luck with the cowl area. That is a tough spot to repair.

WadmalawJoe · 05-04-2013, 05:03 PM

A couple months ago I swapped most of my regular 194 bulbs for the 168's which are much brighter. I didn't pick up enough bulbs to do them all. I need to go grab a few more now that I have the cluster out and its much easier to install bulbs.

kcsa75 · 05-04-2013, 05:09 PM

Quote:

Originally Posted by TBONE1964

One thing to make sure of is that the optic cable is not kinked or has any hard bends in it. That will break the flow of light to the shift indicator. I know they make brighter dash light bulbs also. Not sure of the part number.

Good luck with the cowl area. That is a tough spot to repair.

Help me out. The fibre optic cable sends light from the dash to the steering column or juice to power a bulb in the steering column. The reason I ask is on my column there is a bulb under the PRNDL. I replaced it but still have no light there.

**TBONE1964** · 05-04-2013, 05:16 PM

Quote:

Originally Posted by kcsa75

Help me out. The fibre optic cable sends light from the dash to the steering column or juice to power a bulb in the steering column. The reason I ask is on my column there is a bulb under the PRNDL. I replaced it but still have no light there.

I think it depends on the year of your truck and if the column has been changed. I believe the early versions )67/68) did have a light by the indicator. 69- 72 used the optic cable.

I am not an expert on this so if others know please chime in.

kcsa75 · 05-05-2013, 12:42 PM

Quote:

Originally Posted by TBONE1964

I think it depends on the year of your truck and if the column has been changed. I believe the early versions )67/68) did have a light by the indicator. 69- 72 used the optic cable.

I am not an expert on this so if others know please chime in.

Mine is a 72 with a tilt column.

05-03-2013, 10:13 PM	#1
WadmalawJoe Registered User Join Date: Oct 2012 Location: Ravenel SC Posts: 317	What is this light for? I took my dash cluster out today to disassemble it, clean it and work on getting my temp gauge to work. I had to unplug a odd wire from the odd connected for a light. What is it? Posted via Mobile Device Posted via Mobile Device __________________ Toys/projects Many toys, not enough time to play! My youngest son and I picked up a 69 Chevy C-10 on 1/7/22, this is my second 69, it was 10 years ago that I had my other one. So I’m back!!!

05-03-2013, 10:23 PM	#2
Longhorn 70 Registered User Join Date: Dec 2012 Location: Chandler AZ Posts: 1,149	Re: What is this light for? not for sure but under my gas gauge, I have a BRAKE and a TEMP. Could that be it? __________________ 1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9

05-03-2013, 10:24 PM	#3
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: What is this light for? That is for the fiber optic cable to light up the shift indicator on the steering column.

05-03-2013, 10:51 PM	#4
Longhorn 70 Registered User Join Date: Dec 2012 Location: Chandler AZ Posts: 1,149	Re: What is this light for? YES!!! No wonder Mine doesn't work! THANKS. __________________ 1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9

05-03-2013, 11:00 PM	#5
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: What is this light for? It is a great feeling when ALL the lights work. I discovered mine because the light in the dash was burned out and it was the same one for the optic cable. When I replaced it, the shift indicator also worked.

05-04-2013, 08:14 AM	#6
WadmalawJoe Registered User Join Date: Oct 2012 Location: Ravenel SC Posts: 317	Re: What is this light for? Thanks Tbone! I was wondering if that was for that optic cable. The cable is there, but I think the bulb is out, the shift indicator wasn't lit up at all. That cable can't really transfer a whole lot of light anyway can it? I will take that apart and clean it as well. Seems like I read about a led mod you can do for that. While cleaning and painting inside the dash area with the cluster out, I made an ugly discovery of my wiper motor barely hanging in there. The area around it is severely rusted and you can see out into the cowl area. I'm not looking forward to this repair project. __________________ Toys/projects Many toys, not enough time to play! My youngest son and I picked up a 69 Chevy C-10 on 1/7/22, this is my second 69, it was 10 years ago that I had my other one. So I’m back!!!

05-04-2013, 01:04 PM	#7
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: What is this light for? One thing to make sure of is that the optic cable is not kinked or has any hard bends in it. That will break the flow of light to the shift indicator. I know they make brighter dash light bulbs also. Not sure of the part number. Good luck with the cowl area. That is a tough spot to repair.

05-04-2013, 05:03 PM	#8
WadmalawJoe Registered User Join Date: Oct 2012 Location: Ravenel SC Posts: 317	Re: What is this light for? A couple months ago I swapped most of my regular 194 bulbs for the 168's which are much brighter. I didn't pick up enough bulbs to do them all. I need to go grab a few more now that I have the cluster out and its much easier to install bulbs. __________________ Toys/projects Many toys, not enough time to play! My youngest son and I picked up a 69 Chevy C-10 on 1/7/22, this is my second 69, it was 10 years ago that I had my other one. So I’m back!!!



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