68 Gauge Cluster Ground - Just need to clarify what I have Read - Team Camaro Tech
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post #1 of 16 (permalink) Old Mar 4th, 08, 08:36 PM Thread Starter
 
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68 Gauge Cluster Ground - Just need to clarify what I have Read

68 Cam RS.

Replacing bulbs in gauge cluster, have always had issues with turn signal lights remaining on,etc. Noted no ground wire on gauge cluster back.

So from what i have read:
1- When looking from back of cluster, ground wire would be connect to uppper right screw that is connected to the circut board.
2- Wire would loop to Highbeam connection harness, then connection is grounded to the body when it connects to dash when center screw on console unit is secured to dash. (alternate is to run to another ground on steering column etc.)

-Sorry for dumb question- Can wire be silver or copper and what gauge. I have a roll of the silver 16. Not sure on electical stuff and what the difference is. Thanks in advance.
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post #2 of 16 (permalink) Old Mar 5th, 08, 04:36 AM Thread Starter
 
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

The pic in this post is what i was referencing. Also, on my panel it seems like the bulb holders are in a different place, the grey ones for instance. Any help on what the different bulb holders (194 lamps) vs the larger grey type ones and where they go would be appreiciated.

https://www.camaros.net/forums/showth...er+ground+wire

Last edited by 68camrs; Mar 5th, 08 at 05:02 AM.
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post #3 of 16 (permalink) Old Mar 5th, 08, 05:47 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

The "stock ground" used flat pieces of metal that attached to the screw you show, then to the high beam indicator, then up to behind the top center screw.

It's important that the high beam indicator socket is assembled in the right order, the red lens FIRST, then the 2 ground straps, then the bulb socket.
Even then, this is a very iffy grounding method.

I ran an additional wire, and directly attached it with a separate screw to the dash structure.





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post #4 of 16 (permalink) Old Mar 6th, 08, 07:29 PM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

I did that image in the other post using a '67 cluster.

As Jim mentioned, the factory ground is really bad. I run a dedicated ground wire off the back of the cluster. This makes a big difference and no one will see it.

A lot of issues are that the circuit board isn't grounded to the cluster with the sheet metal screws. I highlighted the ground screw for the dash lights in my picture that is usually the culprit.

1967 Camaro RS 350, Tremec 5spd, Hotchkis, Frame off

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post #5 of 16 (permalink) Old Mar 7th, 08, 04:51 AM Thread Starter
 
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

When you say you grounded the cluster, are you using this screw on the circuit board? I ran a wire like the stock ground setup using that screw (yellow line), then another from the screw with the yellow line labeled ground screw to a body ground. Or is any screw on the cluster ok to use for this ground? I guess my confusion is what screw on the cluster to use, is any ok or does it need to be the specific screw in your pic? Thanks for your help and the pic.

Also, do you know if the grey connectors need to be in those specifc slots and or why? I have two but they were placed in other slots. In total i have 8 small black 194 bulb type connectors and two of the larger grey ones. Thanks again.
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post #6 of 16 (permalink) Old Mar 7th, 08, 06:10 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

any screw that pierces clean (uncoated) copper on the pcb will work.





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post #7 of 16 (permalink) Old Mar 14th, 08, 05:42 PM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

Quote:
Originally Posted by 68camrs View Post
Also, do you know if the grey connectors need to be in those specifc slots and or why? I have two but they were placed in other slots. In total i have 8 small black 194 bulb type connectors and two of the larger grey ones. Thanks again.
I noticed the same thing. I have one grey connector on each side of the PCB. I was under the impression they were for either a turn signal or idiot light, while the others (194) in black were for illumination.

Can anyone confirm?

Thanks.

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post #8 of 16 (permalink) Old Mar 14th, 08, 06:00 PM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

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Originally Posted by booman55 View Post
I noticed the same thing. I have one grey connector on each side of the PCB. I was under the impression they were for either a turn signal or idiot light, while the others (194) in black were for illumination.

Can anyone confirm?

Thanks.
No. I have 2 gray ones and 8 black. all the bulbs are 194's (or were until I replced the illum bulbs with 7 watt 1893's) It had been apart before, and the gray ones were not in any logical place when I first took it apart.





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post #9 of 16 (permalink) Old Mar 15th, 08, 08:05 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

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Originally Posted by JimM View Post
No. I have 2 gray ones and 8 black. all the bulbs are 194's (or were until I replced the illum bulbs with 7 watt 1893's) It had been apart before, and the gray ones were not in any logical place when I first took it apart.
The grey and black boots take different bulbs. The 1893's fit the grey and would be a 7 watt replacement for 1816. The 168's are 5 watts and are the only ones 3 different places could find to replace the 194's.

Do you perhaps have different boots that 1893's fit all of them?

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post #10 of 16 (permalink) Old Mar 17th, 08, 07:49 PM Thread Starter
 
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

Anybody get an answer to this issue as far as where the two grey fittings vs the regular 8 black bulb holders fit into the console? Seems like 2 vs 8 is normal, just where they go is open.
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post #11 of 16 (permalink) Old Mar 18th, 08, 04:09 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

Not to hijack this thread, but i'm not getting any power to the back of the panel for the gauge lights (the gray wire). Does this power not come from the dark green wire leaving the headlight switch? I have power leaving on this wire and I am assuming it's spliced to the gray wire going to the back of the panel. Is there something i am missing here?

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post #12 of 16 (permalink) Old Mar 18th, 08, 04:59 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

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Originally Posted by MSCHMIDT9090 View Post
Is there something i am missing here?
Yes, just one little thing.

The dark green wire goes to the fusebox, to one side of the short fuse on the bottom. The gray wire comes off the other side of that fuse and feeds the ILLUM circuit.





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post #13 of 16 (permalink) Old Mar 18th, 08, 05:11 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

Quote:
Originally Posted by 68camrs View Post
Anybody get an answer to this issue as far as where the two grey fittings vs the regular 8 black bulb holders fit into the console? Seems like 2 vs 8 is normal, just where they go is open.
I used the two grey fittings for turn signals. It would seem to make sense since there are two turn signals.

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post #14 of 16 (permalink) Old Mar 18th, 08, 05:36 AM Thread Starter
 
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

Found this in Factory Assembly Manual Pg 162. UPC 12 B3.

Socket Asm (Gray)
Brake TT.
Generator TT.

One Socket Asm (blk)
Oil Pressure.

All other appear to accept the Socket Asm Black for Opt Bulbs

So i think there are actually 3 diff sockets on this area.
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post #15 of 16 (permalink) Old Mar 18th, 08, 06:45 AM
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Re: 68 Gauge Cluster Ground - Just need to clarify what I have Read

Quote:
Originally Posted by 68camrs View Post
Found this in Factory Assembly Manual Pg 162. UPC 12 B3.

Socket Asm (Gray)
Brake TT.
Generator TT.

One Socket Asm (blk)
Oil Pressure.

All other appear to accept the Socket Asm Black for Opt Bulbs

So i think there are actually 3 diff sockets on this area.
Yes, I noticed that yesterday as well. All of the black sockets except one use the peanut bulbs (194 or 168). Since I added a tach I excluded the oil pressure socket.

So the grey are for the idiot lights? Interesting.

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