Front marker lights turn off when headlights turn on - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mkst65 · 02-10-2013, 04:25 PM

Hi, I,m new to this forum and just lookin for some help. I bought a 65 longbed recently. Someone had put a tilt steering column in the truck (worst hack job I,ve seen in awhile, anyway..). I finally got the front marker lights to come on and they no longer come on when I hit the brakes! Next problem is that the front markers turn off as soon as I turn the headlights on. Does anyone have any idea where else I should be looking? The only obvious damage to wiring is at the column, which I have been trying to repair. I think it may be a ground or short issue, but not sure and not sure where to look. Never had this body style before and have wanted one for awhile. Any help would be greatly appreciated, thank you.

**aerotruk63** · 02-10-2013, 04:29 PM

That is correct sequence for your lighting. Pull one notch for the lights in the hood to come on the pull to second position and the lights go out in the hood and the headlights come on. Owners manuals are cheap to buy and give a lot of info you might like to know.

61_FL_Apache · 02-10-2013, 06:43 PM

That is the way these headlight switches work. There is a mod out there that will keep them on when the switch is all the way out. I dont have a link handy, but you can do a search on that.

Someone else may be able to post that link for you.

BTW! Welcome to the forum!!

*Sharps40* · 02-10-2013, 07:00 PM

As I remember the mod, slave terminal 4 to terminal 7 on the switch to have the front markers work like a modern vehicle. The thread is on this board with good photos and instructions including the Terminal numbers to slave/jumper together in case my memory is flawed.

LostMy65 · 02-10-2013, 07:10 PM

www.6066gmcguy.org/parklamp6063.htm
Posted via Mobile Device

mkst65 · 02-10-2013, 08:43 PM

Thanks everyone for the help! This is the first time I've had this body style so I'm learning as I go. I found out that YES.. the markers are supposed to turn off when the headlights come on (feel kinda dumb but you don't know until you ask). I found a picture of the wiring mod to make them stay on. I actually just came back in the house from doing it and it works great! I'm not very good with computers so I'll try to get a picture of it up later. So far, that was the easiest part of the wiring I've had to deal with on the whole truck. Thanks again everyone for the help!

markeb01 · 02-10-2013, 10:55 PM

Glad the modification was successful. Welcome to the forum!

02-10-2013, 04:25 PM	#1
mkst65 Registered User Join Date: Feb 2013 Location: Corona Ca Posts: 2	Front marker lights turn off when headlights turn on Hi, I,m new to this forum and just lookin for some help. I bought a 65 longbed recently. Someone had put a tilt steering column in the truck (worst hack job I,ve seen in awhile, anyway..). I finally got the front marker lights to come on and they no longer come on when I hit the brakes! Next problem is that the front markers turn off as soon as I turn the headlights on. Does anyone have any idea where else I should be looking? The only obvious damage to wiring is at the column, which I have been trying to repair. I think it may be a ground or short issue, but not sure and not sure where to look. Never had this body style before and have wanted one for awhile. Any help would be greatly appreciated, thank you.

02-10-2013, 04:29 PM	#2
aerotruk63 Check The Champ, Demonstrator Join Date: Jun 2009 Location: Montreal,Quebec Posts: 6,627	Re: Front marker lights turn off when headlights turn on That is correct sequence for your lighting. Pull one notch for the lights in the hood to come on the pull to second position and the lights go out in the hood and the headlights come on. Owners manuals are cheap to buy and give a lot of info you might like to know. __________________ 1963 *Chevrolet Truck* Literature LINK: https://picasaweb.google.com/113840717762774560215 YouTube Channel with 20+ Original *Chevrolet Truck* Salesmen, Mechanics & Service Department Training Slideshows. https://www.youtube.com/results?sear...otruk63&page=1

02-10-2013, 06:43 PM	#3
61_FL_Apache Who Me? Join Date: Sep 2010 Location: Royal Palm Beach, FL Posts: 4,067	Re: Front marker lights turn off when headlights turn on That is the way these headlight switches work. There is a mod out there that will keep them on when the switch is all the way out. I dont have a link handy, but you can do a search on that. Someone else may be able to post that link for you. BTW! Welcome to the forum!! __________________ Steve 1997 Tahoe LT 4D 2WD (DD) 2001 Blazer 4D 2WD 1961 Apache 10 (sold) 1965 C10 Stepper (sold)

02-10-2013, 07:00 PM	#4
Sharps40 Account Suspended Join Date: Oct 2012 Location: here Posts: 2,408	Re: Front marker lights turn off when headlights turn on As I remember the mod, slave terminal 4 to terminal 7 on the switch to have the front markers work like a modern vehicle. The thread is on this board with good photos and instructions including the Terminal numbers to slave/jumper together in case my memory is flawed.

02-10-2013, 07:10 PM	#5
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,530	Re: Front marker lights turn off when headlights turn on www.6066gmcguy.org/parklamp6063.htm Posted via Mobile Device __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035

02-10-2013, 08:43 PM	#6
mkst65 Registered User Join Date: Feb 2013 Location: Corona Ca Posts: 2	Re: Front marker lights turn off when headlights turn on Thanks everyone for the help! This is the first time I've had this body style so I'm learning as I go. I found out that YES.. the markers are supposed to turn off when the headlights come on (feel kinda dumb but you don't know until you ask). I found a picture of the wiring mod to make them stay on. I actually just came back in the house from doing it and it works great! I'm not very good with computers so I'll try to get a picture of it up later. So far, that was the easiest part of the wiring I've had to deal with on the whole truck. Thanks again everyone for the help!

02-10-2013, 10:55 PM	#7
markeb01 Senior Enthusiast Join Date: Feb 2007 Location: Spokane Valley, WA Posts: 8,356	Re: Front marker lights turn off when headlights turn on Glad the modification was successful. Welcome to the forum! __________________ My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=444502



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