1972 Marker and running lights - The 1947 - Present Chevrolet & GMC Truck Message Board Network

david7w5@gmail.com · 10-02-2024, 08:01 PM

I have a 1972 C30, when I turn on the first pull of the marker lights, the front side and bumper lights does not light up. It has a flat bed so no rear marker light. My headlights work, rear taillights, brake lights, and hazard lights work. When I turn on the blinker the front marker light flashes.

I owned a 69 in the past and the marker lights didn't flash.

What would cause this problem?

**dmjlambert** · 10-02-2024, 10:07 PM

Burned out fuse in the fuse panel, or bad parking light bulbs in the bumper are the top suspects.

**KSCHEVYUP** · 10-02-2024, 10:36 PM

Make sure you have a good ground.

**67 twins** · 10-03-2024, 12:10 AM

Just an FYI 72 marker lights are supposed to flash.

**'68OrangeSunshine** · 10-03-2024, 05:40 PM

Sounds like a 1967. [They had no Side Marker Reflectors.] The Turn Signal Lights worked L & R to signal turns. Hazards blinked all around. On first click, They came on as Parking Lights.
Second click, the Headlights came on but the front yellow lights went out. [Except for indicating turns]
A PO may have used a 1967 Model Year Headlight Switch.

In '68 the Side Marker Reflectors were installed, but had no lights. The Running lights stayed on with the headlights.
'69 I think, they were optionally lighted. IDKFS.
By '71 all the Marker lights were on, and the fronts alternated blinks with the front side lamps. Red rear markers don't blink.

10-02-2024, 08:01 PM	#1
david7w5@gmail.com Registered User Join Date: Aug 2019 Location: Cartersville, GA Posts: 3	1972 Marker and running lights I have a 1972 C30, when I turn on the first pull of the marker lights, the front side and bumper lights does not light up. It has a flat bed so no rear marker light. My headlights work, rear taillights, brake lights, and hazard lights work. When I turn on the blinker the front marker light flashes. I owned a 69 in the past and the marker lights didn't flash. What would cause this problem?

10-02-2024, 10:07 PM	#2
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,810	Re: 1972 Marker and running lights Burned out fuse in the fuse panel, or bad parking light bulbs in the bumper are the top suspects.

10-02-2024, 10:36 PM	#3
KSCHEVYUP Senior Member Join Date: Nov 2003 Location: NEAR MARYSVILLE,KANSAS 66508 Posts: 470	Re: 1972 Marker and running lights Make sure you have a good ground. __________________ 1972 C30 Cheyenne Super 1971 C10 (Parts truck)

10-03-2024, 12:10 AM	#4
67 twins Senior Member Join Date: Mar 2019 Location: Herculaneum MO (20 minutes south of St. Louis Posts: 641	Re: 1972 Marker and running lights Just an FYI 72 marker lights are supposed to flash. __________________ 67 C10 283 T5 swapped longbed fleetside = wife's daily driver 67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck 67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD 72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck Can you tell we are fans of longbed fleetsides & 67s Chris

10-03-2024, 05:40 PM	#5
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,432	Re: 1972 Marker and running lights Sounds like a 1967. [They had no Side Marker Reflectors.] The Turn Signal Lights worked L & R to signal turns. Hazards blinked all around. On first click, They came on as Parking Lights. Second click, the Headlights came on but the front yellow lights went out. [Except for indicating turns] A PO may have used a 1967 Model Year Headlight Switch. In '68 the Side Marker Reflectors were installed, but had no lights. The Running lights stayed on with the headlights. '69 I think, they were optionally lighted. IDKFS. By '71 all the Marker lights were on, and the fronts alternated blinks with the front side lamps. Red rear markers don't blink. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

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