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#1 |
Registered User
Join Date: Oct 2014
Location: Liberty Lake, WA
Posts: 6
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Left front turn signal and indicator Dead
I've been lurking for some time...
![]() ![]() Issue: the Left Front turn signal and the dash cluster indicator for the left signals don't light up. The left rear turn signal flashes okay, though slower than the right side (signifying no draw from the left front). I've verified the left front light and housing are fine by using the left side to feed power to it at the connector through the radiator support flange. I've also verified the left side dash light filament is good and have replaced the dash signal light socket. The left front signal works fine on emergency! Don't know if it is normal but when emergency blinker is on, the emergencies will stop when braking. Any ideas of what else to check, verify? VOM at the ready. TIA Bill ![]()
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All in the Family 1970 CST20 with dump articulated bed |
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#2 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: Left front turn signal and indicator Dead
Wish I could help with your problem, but..... at least I can answer this part. Yes, it is normal on these trucks.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#3 |
Registered User
Join Date: Oct 2014
Location: Liberty Lake, WA
Posts: 6
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Re: Left front turn signal and indicator Dead
^Mike^
Thanks
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All in the Family 1970 CST20 with dump articulated bed |
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#4 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Yes the emergency lights will quit blinking if the brake pedal is applied.
Now for the turn signal. With key on front bulb out take a test light and see if you can get it to light up by touching one of the connectors in the housing. It should blink just like the bulbs. If not take the connection loose at the core support and try it there. If you get power there it's between the connector and light housing. If you don't get it there go to up under the dash at the column check the wire for turn signal there. Just keep back tracking until you find power. ![]() ![]()
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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. |
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#5 |
Registered User
Join Date: Apr 2013
Location: South Westerlo, New York
Posts: 1,325
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Re: Left front turn signal and indicator Dead
Also, the case of the front turn signals have to ground to the grill. while the nonworking turn signal is on, take a screwdriver or something sharp and wedge it between the grill and turn signal case to make good ground and see if it lights. it happened to mine..
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Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB. |
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#6 |
Registered User
Join Date: Feb 2012
Location: Ontario, Oregon
Posts: 17
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Re: Left front turn signal and indicator Dead
If none of the above work. Check the turn signal switch under the steering wheel. The switch will not make proper contact due to dust or light corrosion. It is a pain to remove the steering wheel. I have had to do that on several of my trucks in the past.
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#7 |
Registered User
Join Date: Oct 2014
Location: Liberty Lake, WA
Posts: 6
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Re: Left front turn signal and indicator Dead
Well still tracing the wire. No power at the engine side of firewall except when emergencies are active. Since emergencies are active I'm thinking that the issue is the switch itself as the same wire is used for both.
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All in the Family 1970 CST20 with dump articulated bed |
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#8 |
Registered User
Join Date: Oct 2014
Location: Liberty Lake, WA
Posts: 6
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Re: Left front turn signal and indicator Dead
It's the switch, turn signal. So guess we will be pulling the SW. I may be able to bend the contact. We will see.
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All in the Family 1970 CST20 with dump articulated bed |
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#9 |
Registered User
Join Date: Sep 2015
Location: Pocatello, ID
Posts: 3
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Re: Left front turn signal and indicator Dead
Just following this. I'm kinda in the same boat with my front turn signals
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#10 |
Registered User
Join Date: Oct 2014
Location: Liberty Lake, WA
Posts: 6
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Re: Left front turn signal and indicator Dead
After tracing the wires I found no power to the entire wire. So took her on a drive. And suddenly I had intermittent good connection signified by the turn signal indicator. So after I got back from my drive I lightly pressed the lever and was able to replicate the now working lights. Hope this helps someone else. I will likely not pull the steering wheel for a week or so. News at 11.
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All in the Family 1970 CST20 with dump articulated bed |
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#11 |
Registered User
Join Date: Oct 2011
Location: Houston tx
Posts: 701
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Re: Left front turn signal and indicator Dead
Any updates experiencing the same thing now
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#12 |
Msgt USAF Ret
![]() ![]() Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,714
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Re: Left front turn signal and indicator Dead
Here is how to test your turn signal switch without pulling the steering wheel. http://67-72chevytrucks.com/vboard/s...d.php?t=695511
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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#13 | |
Registered User
Join Date: Oct 2011
Location: Houston tx
Posts: 701
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Re: Left front turn signal and indicator Dead
Quote:
Started tracing down wires and found a bad connection under the dash.. Fixed now thanks |
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#14 |
Registered User
Join Date: Mar 2009
Location: WARRENSBURG,MISSOURI,64093
Posts: 1,518
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Look at your steering column "half Moon" connector, those sometimes work loose and might be a culprit, also mice have a tendency to chew through wires, might have a broken connection.
Ben ![]() |
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#15 |
Registered User
Join Date: Oct 2014
Location: Liberty Lake, WA
Posts: 6
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Re: Left front turn signal and indicator Dead
Sorry as have no update. Have had too much work on house Etc. Mine is definitely in the switch, just need to pull it. Glad you found your bad wire.
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All in the Family 1970 CST20 with dump articulated bed |
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#16 |
Registered User
Join Date: Apr 2015
Location: East Tn (In the heart of the Smoky Mtns)
Posts: 1,868
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Re: Left front turn signal and indicator Dead
In addition to all the rest of the advice, check all your wires for breaks. I've had wires break, but the outer shell stays intact. Also, check any connection for corrosion. Here is SC, the humidity reeks havoc on wiring. My truck has been sitting for a while, so I'm having the same issues that you're having.
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turn signal indicator, turn signal issues, turn signals |
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