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Apr 20, 2006 | 11:03 AM

Rickey2525

Thread Starter

Racer

Joined: Feb 2006

Posts: 295

Likes: 0

From: Bristol VA

New to forum need help please

Hi I'm new to the forum I bought a black 98 C5 m6 two months ago.
I was driving home last night and the dash & headlights started to
blink when I got to the house I got out and let the car run with all
the lights on, wallked around and all the lights were cutting on & off
at the same time! So I did a search and seen the threads on ground
connections but seems no one had all their lights cut off and on. It
looks like I need to clean all the grounds but for right now can anyone
tell me if this is the problem and which wire to look for?
I want to thank the forum members for all the tips and info I have
read over the past month. Great place. Rickey

Apr 20, 2006 | 11:52 AM

vettecop1125

Le Mans Master

Joined: Mar 2003

Posts: 7,795

Likes: 2

From: Noblesville Indiana

CI 7-8 Veteran

St. Jude Donor '03-'04-'05

Are the lights actually going on and off or just dimming slightly?

Apr 20, 2006 | 12:49 PM

Rickey2525

Thread Starter

Racer

Joined: Feb 2006

Posts: 295

Likes: 0

From: Bristol VA

The lights are dimming to the point they are allmost out, but if shut off the engine they stay on.

Apr 20, 2006 | 01:05 PM

Bill Curlee

Tech Contributor

Joined: Dec 1999

Posts: 32,910

Likes: 2,402

From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

Your headlights driving lights and daytime running lights grounds are all connected together in to a "SPLICE PACK" (SP-101) which is taped to a wire in the front bumper area on the passengers side. From that SP, the main ground wire from the SP goes to Chassis Ground connector G-102 which is just aft of the passengers head light assembly and inboard of the spot where the hydraulic hood support bolts the the fender well.

It would also be prudent to clean ground G-101 which is in the same area but on the drivers side. Those two grounds are the most problematic of all the chassis grounds.

Its also avery good idea to disconnect the battery before removing the grounds. While the battery is disconnected, clean the battery connections and terminals. Make sure that you torque the battery cables on the battery to 11 ft/lbs.

See if that helps and let us know how it works for you.

Bill

Apr 20, 2006 | 01:10 PM

Bill Curlee

Tech Contributor

Joined: Dec 1999

Posts: 32,910

Likes: 2,402

From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

It looks like your headlight issue is caused or amplified by vibration. Before you do any repairs to the grounds, I would have someone watch the lights while you wiggle and pull on the wiring harnesses, grounds and plugs with the engine off and see if you can find the area that is causing the bad connection.

BC

Apr 20, 2006 | 01:13 PM

Rickey2525

Thread Starter

Racer

Joined: Feb 2006

Posts: 295

Likes: 0

From: Bristol VA

Thank you Bill I will try it when I get home.

Apr 21, 2006 | 02:31 AM

striper

Le Mans Master

Joined: May 2005

Posts: 6,366

Likes: 249

From: Fort Lauderdale, Florida

I had a similar problem and it was a loose battery connection. Side terminal batteries are not the best type of connection, so I'd check that first.

Apr 21, 2006 | 08:09 AM

Rickey2525

Thread Starter

Racer

Joined: Feb 2006

Posts: 295

Likes: 0

From: Bristol VA

I thank you Bill Curlee and Striper !!!!!
You guys were right on the money first I took loose the ground connections G101 & G102 cleaned and reinstalled then cleaned the
battery cable connections, everything is working now. I do have a warranty but our club is hosting a muscle car event this sunday at a local track and I didn't want the car tied up at the dealer thanks again.
Rickey.