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Old 06-21-2015, 06:27 PM   #1
bigmoose
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New guy needs help with turn signals

Hi Folks,

I am new here but am an active member over at the Smith-Wesson forum.

I bought a 1971 Corvette last September and have had a lot of fun driving and tinkering with it. It is a convertible with the 350ci/270 HP engine. Color is Ontario Orange. 4 speed.

The car spent its whole life in Florida until I bought it from a friend. I had it shipped up here to Central New York State.

The turn signals are slow and hazards work fine with the headlights off. With the headlights on the turn signals illuminate but do not flash. The hazards flash but a bit slower than with headlights off.

I replaced the flasher control and the problem remains. Are there two flasher controls, one for turn signal and one for hazards? I only know of the one on the fuse block behind clutch pedal.

Side marker lights operate normally.

I am guessing that not enough amperage is being drawn thru the flasher control to heat it up properly.

Any help would be greatly appreciated. I look forward to contributing here when I can.

Thanks much!!
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Old 06-21-2015, 10:40 PM   #2
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Welcome to chasing your tail on Corvette electrical system. The most common trouble in the turnsignal and parking light, brake light system is a bad ground. eack bulb has its own ground wire. A bad ground will cause it to back feed in to the other lights ground.

So check them all as a bad ground on the rear can cause what looks like a problem on the front, believe it or not...
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Old 06-22-2015, 11:40 PM   #3
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I know my 72 has 2 flashers one by fuse box under steering wheel * the other one is under dash right side under the map pocket **


so I hope this helps like I said not sure on the 71 s
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Old 06-23-2015, 08:40 AM   #4
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Yep- 71 is just like a 72- one for for turn (pass side almost at the kick panel ) and one for hazards (on the fuse block).

When you say headlights- what about just parking lights- is there still an issue?

If so unplug the front side marker lights out and see what happens-

Let us know-

Richard
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Old 06-23-2015, 09:51 AM   #5
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Quote:
Originally Posted by iburke View Post
Welcome to chasing your tail on Corvette electrical system. The most common trouble in the turnsignal and parking light, brake light system is a bad ground. eack bulb has its own ground wire. A bad ground will cause it to back feed in to the other lights ground.

So check them all as a bad ground on the rear can cause what looks like a problem on the front, believe it or not...
I've got a 1970 Roadster......... great cars. Anyway, I agree with iburke on this, likely a ground issue. A bad bulb can also cause similar symptoms, but it seems you checked those.

Clean the ground wires up for all the lights, radiator support, frame to birdcage, etc........ Post again to let us know if that helps.

Welcome to DC.
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Old 06-23-2015, 01:22 PM   #6
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problem solved

Thanks to all who responded. This forum didn't disappoint.

I replaced the flasher control under the passenger side map case area. I am sure the one in there was original to the car. All turn signals and hazards work perfectly with and without headlights on.
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