68 dash switches grounding - Team Camaro Tech
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post #1 of 4 (permalink) Old Feb 6th, 09, 03:04 PM Thread Starter
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Dan
 
Join Date: May 2003
Location: Fort Lauderdale Fla.
Posts: 237
Question 68 dash switches grounding

Do the headlight,wiper,ignition switches need to touch bare metal on the dash where they screw into? I am painting my dash and wondered if I needed to scrape the paint where the mechanical contact (switch to dash) is for a better ground or if it matters Thanks

Dan

68 camaro RS 327/275 THM350 4 wheel disc brake 8.5 10 bolt 3.42 daily driver
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post #2 of 4 (permalink) Old Feb 6th, 09, 03:23 PM
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Sean
 
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Re: 68 dash switches grounding

I know 100% for sure the wiper switch does, I believe the others don't but I can't recall for sure. I had a wiper problem with mine and it was the surface rust making a poor connection at the switch. Scratch to shiny bare metal and use a conductive substance like anti seize to help the connection (that's on the back side of the dash). The wiper switch actually uses a star washer between the switch and dash to help the contact.
If you are painting the dash, the center screw of the gauge cluster is a ground point as well, so make sure that's clean and bare as well. About 90% of the time that screw and ground strap gets missed and you dash lights do crazy stuff.
Good luck!

Sean

1968 rs with an old school 354" SB2.2 pump gas motor.

Repetition does not transform a lie into a truth.

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post #3 of 4 (permalink) Old Feb 7th, 09, 10:29 AM
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Re: 68 dash switches grounding

Sean is right; the wiper switch needs a ground. The other switches do not. The instrument cluster ground is a very common problem on 67 and 68 models. An alligator lead is a good troubleshooting tool. Hold the wiper switch in your hand and use the alligator lead to ground the switch body to the under-dash. Flip the switch and the wipers should wipe.

Dave
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68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #4 of 4 (permalink) Old Feb 8th, 09, 06:06 AM Thread Starter
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Dan
 
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Location: Fort Lauderdale Fla.
Posts: 237
Re: 68 dash switches grounding

Thanks for your replies! I have the dash painted and will be reassy shortly, I am having problems with the wipers only wanting to work when the switch was pushed in to engage the wiper pump motor.

68 camaro RS 327/275 THM350 4 wheel disc brake 8.5 10 bolt 3.42 daily driver
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