Headlights flash with turn signals - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigCountryx · 09-27-2018, 04:37 PM

72 Blazer - with the headlight switch turned off, they flash along with all of my dash lights when my turn signals are turned on. I feel like it's a ground issue, but what grounds should I start with? Dash ground, where is that located? Headlight grounds Turn signal grounds maybe? I hate electrical issues.

Chris_oz · 09-27-2018, 04:51 PM

Quote:

Originally Posted by BigCountryx

72 Blazer - with the headlight switch turned off, they flash along with all of my dash lights when my turn signals are turned on. I feel like it's a ground issue, but what grounds should I start with? Dash ground, where is that located? Headlight grounds Turn signal grounds maybe? I hate electrical issues.

It's the turn signal ground, try to see if only one direction does it.
Do the tail lights flash too?

BigCountryx · 09-27-2018, 11:15 PM

Both directions do it and the tail lights dont flash like the headlights.

tdangle · 09-28-2018, 10:09 AM

When ever I track down a problem like this, it does seem to be ground problems. Check the grounds at the headlight bulbs and the turn signal bulbs. also double check the bulbs. Once had a bulb filament break and short to the other filament causing all sorts of strange issues. this was at the rear bulb

**LockDoc** · 09-28-2018, 12:10 PM

-
As far as ground strap locations read through this thread....

http://67-72chevytrucks.com/vboard/s...d.php?t=422234

LockDoc

09-27-2018, 04:37 PM	#1
BigCountryx Registered User Join Date: May 2009 Location: Gonzales, LA Posts: 779	Headlights flash with turn signals 72 Blazer - with the headlight switch turned off, they flash along with all of my dash lights when my turn signals are turned on. I feel like it's a ground issue, but what grounds should I start with? Dash ground, where is that located? Headlight grounds Turn signal grounds maybe? I hate electrical issues. __________________ 1972 Pale Yella 2WD Blazer ..... 350HO/700R4.... '68 Clipped 1970 Original Paint SWB Farm Truck ..... 5.3/4L80.... 2x HRPT Participant

09-27-2018, 11:15 PM	#3
BigCountryx Registered User Join Date: May 2009 Location: Gonzales, LA Posts: 779	Re: Headlights flash with turn signals Both directions do it and the tail lights dont flash like the headlights. __________________ 1972 Pale Yella 2WD Blazer ..... 350HO/700R4.... '68 Clipped 1970 Original Paint SWB Farm Truck ..... 5.3/4L80.... 2x HRPT Participant

09-28-2018, 10:09 AM	#4
tdangle Registered User Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,210	Re: Headlights flash with turn signals When ever I track down a problem like this, it does seem to be ground problems. Check the grounds at the headlight bulbs and the turn signal bulbs. also double check the bulbs. Once had a bulb filament break and short to the other filament causing all sorts of strange issues. this was at the rear bulb __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC

09-28-2018, 12:10 PM	#5
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,771	Re: Headlights flash with turn signals - As far as ground strap locations read through this thread.... http://67-72chevytrucks.com/vboard/s...d.php?t=422234 LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

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