i badly need help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

krazy_texan · 01-13-2003, 02:02 AM

i have checked and checked again for why my rear blinkers wont come on and why my brake lights wont come on though the taillights work when i turn them on, i have all new bulbs and fuses i have tested all the wires and they are hot but nothing happens what could it be

bigvinnie · 01-13-2003, 02:18 AM

for the blinkers, have you used a test light to verify that you get a pulsing current to the bulbs...??? if not, start back-tracking til you do... the switch (in the the steering column) could be bad...

many lighting problems are also caused by poor grounding...

Bowed · 01-13-2003, 02:39 AM

Brake & signal light are on the same segment of the bulb . Check the harness along the frame for damage , a pretty common problem .

Southpa · 01-13-2003, 02:48 AM

Did you replace the flasher under the dash? Also check all your frame to body grounds.

Andy4639 · 01-13-2003, 08:14 AM

Check the connector at the back of the frame right before it gets to the last member. I had trouble with it before on mine. I had power all the way to there then nothing. You may also want to check and see if someone before you changed the wiring around. You never know why people do somethings.

Longhorn Man · 01-14-2003, 12:23 AM

Chances are your turn signal switch is bad. That or a couple wires are hashed.

SWINGSAX68 · 01-14-2003, 03:23 AM

Check the GROUND......GROUND GROUND GROUND.....Had a similar problem.

Longhorn Man · 01-15-2003, 12:21 AM

Ground is not likely...possable, but again, not likely.
There is obviously already a good ground...the tail lights work, and they need a ground. There is only like an amp or two difference between the tail light and brake light.

01-13-2003, 02:02 AM	#1
krazy_texan Registered User Join Date: Oct 2002 Location: West Des Moines, Ia Posts: 3,233	i badly need help i have checked and checked again for why my rear blinkers wont come on and why my brake lights wont come on though the taillights work when i turn them on, i have all new bulbs and fuses i have tested all the wires and they are hot but nothing happens what could it be __________________ Krazy Texan My Trucks are made with Wrenches not Chop Sticks 1967 GMC 3/4 ton "Johnny Cash" 1990 v1500 suburban 1967 Ford f100 Swb 4x4 "green bean" GOD BLESS JESUS, JOHN WAYNE, AND THE ALAMO

01-13-2003, 02:18 AM	#2
bigvinnie Registered User Join Date: Aug 2001 Location: escondido, ca 92026 Posts: 1,222	for the blinkers, have you used a test light to verify that you get a pulsing current to the bulbs...??? if not, start back-tracking til you do... the switch (in the the steering column) could be bad... many lighting problems are also caused by poor grounding... __________________ '72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project Last edited by bigvinnie; 01-13-2003 at 02:23 AM.

01-13-2003, 02:48 AM	#4
Southpa Registered User Join Date: May 2000 Location: Victoria, BC, Canada Posts: 2,409	Did you replace the flasher under the dash? Also check all your frame to body grounds. __________________ 1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first.

01-13-2003, 08:14 AM	#5
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Lights Check the connector at the back of the frame right before it gets to the last member. I had trouble with it before on mine. I had power all the way to there then nothing. You may also want to check and see if someone before you changed the wiring around. You never know why people do somethings. __________________ 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.

01-14-2003, 03:23 AM	#7
SWINGSAX68 Now the others dig........ Join Date: May 2002 Location: San Antonio, TX Posts: 1,520	Check the GROUND......GROUND GROUND GROUND.....Had a similar problem. __________________ 68 Chevy C10 Stepside Black Primer 78 GMC Longbed White 09 Chevy Silverado Shortbed Granite Blue *LOOKING FOR A 67 4 DOOR IMPALA!!!Just like Sam and Dean Winchester!! 'Cause Mustangs are for p^#$ and you can fit a body in the trunk of a 67 Impala* MEMBER OF THE DRUM BRAKE CLUB Bachelor of Music in Jazz Studies Texas State University-San Marcos, TX Certified Music Educator I hope Mom is up there watching and being my Guardian Angel "I've got a fever.....and the only prescription.....IS MORE COW BELL" -The Legendary: Bruce Dickenson "F#$@ 'em up!!!!!!" -The Legendary: Rogelio Escobar TRUCKY LINKS** http://67-72chevytrucks.com/vboard/s...d.php?t=457750 http://67-72chevytrucks.com/vboard/s...d.php?t=461184 http://67-72chevytrucks.com/vboard/s...d.php?t=472848 http://67-72chevytrucks.com/vboard/s...d.php?t=417541 http://67-72chevytrucks.com/vboard/s...d.php?t=477788

01-13-2003, 02:39 AM	#3
Bowed Registered User Join Date: Oct 2002 Location: where it's hot Posts: 1,059	Brake & signal light are on the same segment of the bulb . Check the harness along the frame for damage , a pretty common problem .

01-14-2003, 12:23 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Chances are your turn signal switch is bad. That or a couple wires are hashed.

01-15-2003, 12:21 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Ground is not likely...possable, but again, not likely. There is obviously already a good ground...the tail lights work, and they need a ground. There is only like an amp or two difference between the tail light and brake light.

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