Front park light problem.. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FRENCHBLUE72 · 10-15-2010, 11:33 PM

Anyone know why one park light would be dimmer than the other?

yob2kanobe · 10-15-2010, 11:50 PM

Poor ground?

usmcchevy · 10-16-2010, 12:23 AM

I'll second the ground problem, remove the light and sand/clean where it comes in contact with the grille.

hayhauler71 · 10-16-2010, 08:28 AM

Clip on a jumper wire from the light to ground and see if it gets bright.

Andy4639 · 10-16-2010, 10:46 AM

Quote:

Originally Posted by hayhauler71

clip on a jumper wire from the light to ground and see if it gets bright.

x2

Christiansok · 10-16-2010, 10:53 AM

Had the same problem and it was also a poor ground from the bulb socket to the light housing. If the bulb is solid up in the housing (my problem is usually the bulb drops down out of the housing) then you should clean up where they contact like was mentioned.

raycow · 10-16-2010, 11:42 AM

Check to make sure the socket is wired correctly. The bulb has two filaments, a bright one for the turn signal and a dim one for the parking light. Take off the lens so you can see which one is lit.

Also, even though the bulb base has offset pins, it is sometimes possible to force the bulb into the socket "backwards" which would produce the same result.

Ray

Longhorn Man · 10-16-2010, 02:48 PM

that one is too bright... my money is on the bulb being in backwards

LONGHAIR · 10-16-2010, 06:48 PM

Andy may be onto something, but it does take a bit of violence (or a well worn/corroded socket) to get one in backward. The pins are off-set to prevent that, but I have seen it happen.

Longhorn Man · 10-16-2010, 09:40 PM

I've been seeing more and more with the made in china bulbs, thet the pins aren't as offset as they should be and it is very easy to make the mistake. Last month I returned 2 boxes of defective 1157 bulbs to napa for this very reason.

FRENCHBLUE72 · 10-17-2010, 10:17 AM

Well guys I don't have the bulbs in backwards even swapped to a set of yellow bulbs and that changed nothing. I ran a ground with alligator clips and that seemed to change nothing. Both bulbs are lighting up the same filament just one is super bright and the other dim.. Gonna try to finish the rest of the wiring harness today and see if its possible that maybe I have some column wires touching inside the cab?

Andy4639 · 10-17-2010, 11:01 AM

Is the bulb good and tight inside the housing? If not it's the same as a ground issue. The bulb has to fit tight and not beable to move at all once set. I had to buy new assemblies for this same reason. If the bulb is in place and it moves around it's not making good connection on the side of the bulb which is the ground. I used some very small metal peices and wedged inside the socket and got it working better. Ended up buying new assembly though.

cdowns · 10-17-2010, 11:55 AM

i'd double check all connections for full solid conact, as well as running a ground wire directly from the socket to the neg batt terminal

**VetteVet** · 10-17-2010, 11:57 AM

How does the left turn signal look when it's flashing? If it's dimmer than the right one then you may have the light blue and the purple wire reversed in the rubber plug- in socket.

sams60gmc · 10-17-2010, 02:10 PM

Ah dont change it. It matches your Blazer hahahaha. 0----o

yob2kanobe · 10-17-2010, 05:30 PM

Quote:

Originally Posted by VetteVet

How does the left turn signal look when it's flashing? If it's dimmer than the right one then you may have the light blue and the purple wire reversed in the rubber plug- in socket.

If that doesnt work use a volt-ohmmeter to check to see if in fact you are getting the same +pos voltage on each side. could be a bad wire or connection along the way.

10-15-2010, 11:33 PM	#1
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Front park light problem.. Anyone know why one park light would be dimmer than the other? Attached Images __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

10-15-2010, 11:50 PM	#2
yob2kanobe Registered User Join Date: Jul 2010 Location: SE Washington state Posts: 80	Re: Front park light problem.. Poor ground?

10-16-2010, 12:23 AM	#3
usmcchevy Has more rust than truck... Join Date: Apr 2005 Location: Ivanhoe, MN Posts: 2,421	Re: Front park light problem.. I'll second the ground problem, remove the light and sand/clean where it comes in contact with the grille. __________________ 1972 Custom/10 SWB, 4.8/4l80e Build thread LSx Swap FAQ index

10-16-2010, 08:28 AM	#4
hayhauler71 Registered User Join Date: Aug 2009 Location: St. Paul MN. Posts: 1,996	Re: Front park light problem.. Clip on a jumper wire from the light to ground and see if it gets bright. __________________ Fuzzy Last edited by hayhauler71; 10-16-2010 at 08:29 AM. Reason: added detail

10-16-2010, 10:53 AM	#6
Christiansok Registered User Join Date: Aug 2010 Location: Wausau, WI Posts: 69	Re: Front park light problem.. Had the same problem and it was also a poor ground from the bulb socket to the light housing. If the bulb is solid up in the housing (my problem is usually the bulb drops down out of the housing) then you should clean up where they contact like was mentioned.

10-16-2010, 11:42 AM	#7
raycow Registered User Join Date: Mar 2003 Location: San Francisco, CA USA Posts: 2,454	Re: Front park light problem.. Check to make sure the socket is wired correctly. The bulb has two filaments, a bright one for the turn signal and a dim one for the parking light. Take off the lens so you can see which one is lit. Also, even though the bulb base has offset pins, it is sometimes possible to force the bulb into the socket "backwards" which would produce the same result. Ray

10-16-2010, 02:48 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Front park light problem.. that one is too bright... my money is on the bulb being in backwards

10-16-2010, 09:40 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Front park light problem.. I've been seeing more and more with the made in china bulbs, thet the pins aren't as offset as they should be and it is very easy to make the mistake. Last month I returned 2 boxes of defective 1157 bulbs to napa for this very reason.

10-17-2010, 10:17 AM	#11
FRENCHBLUE72 PROJECT 7DEUCE Join Date: Dec 2002 Location: GRANTS PASS OR Posts: 21,606	Re: Front park light problem.. Well guys I don't have the bulbs in backwards even swapped to a set of yellow bulbs and that changed nothing. I ran a ground with alligator clips and that seemed to change nothing. Both bulbs are lighting up the same filament just one is super bright and the other dim.. Gonna try to finish the rest of the wiring harness today and see if its possible that maybe I have some column wires touching inside the cab? __________________ GO BIG GREEN GO DUCKS MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P..

10-17-2010, 11:01 AM	#12
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Front park light problem.. Is the bulb good and tight inside the housing? If not it's the same as a ground issue. The bulb has to fit tight and not beable to move at all once set. I had to buy new assemblies for this same reason. If the bulb is in place and it moves around it's not making good connection on the side of the bulb which is the ground. I used some very small metal peices and wedged inside the socket and got it working better. Ended up buying new assembly though. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

10-17-2010, 11:55 AM	#13
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Front park light problem.. i'd double check all connections for full solid conact, as well as running a ground wire directly from the socket to the neg batt terminal __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 10-17-2010 at 11:57 AM.

10-17-2010, 11:57 AM	#14
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	Re: Front park light problem.. How does the left turn signal look when it's flashing? If it's dimmer than the right one then you may have the light blue and the purple wire reversed in the rubber plug- in socket. Attached Images __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

10-17-2010, 02:10 PM	#15
sams60gmc Registered User Join Date: Sep 2008 Location: Vancouver Washington Posts: 726	Re: Front park light problem.. Ah dont change it. It matches your Blazer hahahaha. 0----o __________________ 1960 GMC short fleet, full frame build... http://67-72chevytrucks.com/vboard/s...d.php?t=329718 Last edited by sams60gmc; 10-17-2010 at 02:10 PM.



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