Trouble with turn signals - 70 chevelle - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 5 (permalink) Old Jan 19th, 14, 9:20 PM Thread Starter
Russ
 
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Trouble with turn signals - 70 chevelle

Hey guys, wondering if anybody has any ideas about my turn signal issue. They kinda work, but are erratic and slow. Kinda act like they get stuck or are under powered. I've changed out the blinker relay and checked the amps, headlights and break lights work fine. Everything else seems ok. Whoever had it before me got rid of the points and installed HEI ignition and the newer style alternator. Checked all the grounds I can find and changed out the bulbs, still the same thing. Any ideas?
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post #2 of 5 (permalink) Old Jan 19th, 14, 10:09 PM
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Tom
 
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Re: Trouble with turn signals - 70 chevelle

The distributor and alternator have nothing to do with operation of the turn signals. Which flasher unit did you replace, the one on the fuse block or the one under the dash above the brake pedal mount? The one on the fuse block controls the 4 way flashers, the one under the dash controls the turn signals. Also check your bulbs that they are the correct ones, both use 1157 bulbs. If that doesn't change anything, check the light sockets for corrosion. They they are not making a good ground connection, they won't work correctly. The front turn signals are grounded through the bolts that retain them to the bumper. The rears have their own grounds in the sockets.
If that doesn't work, you may have a wiring issue somewhere between the turn signal switch and the fuse block.

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post #3 of 5 (permalink) Old Jan 20th, 14, 6:55 AM Thread Starter
Russ
 
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Re: Trouble with turn signals - 70 chevelle

Hey thanks for the info, I replaced the one on the fuse box, Ill replace the other one and see if that's the culprit.
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post #4 of 5 (permalink) Old Jan 20th, 14, 9:25 AM
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Bob
 
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Re: Trouble with turn signals - 70 chevelle

Some info: On my 70 the left Frt. Turn sig. was dim & slow. Problem was the L. F. socket. Where the brass bulb socket is " Press onto the metal housing". ( 40 years of dirt & corrosion)
Started grounding by hand with a test light, SHAZAM BATMAN !
SO I just soldered a short wire about an inch long from the brass bulb socket and attached an " EYE " connector on the other end, Drill a hole, metal screw the ground wire to the top of the housing ( so ya kant see the patch job). Light works fine.
This will happen in small towns without airports !
Bob


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post #5 of 5 (permalink) Old Jan 20th, 14, 2:00 PM
Jason
 
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Re: Trouble with turn signals - 70 chevelle

If your problem is that the blinker starts out blinking fine, but starts to slow it's interval between blinks until it just stops blinking and holds the light on, then definitely check that module up by the brake pedal mount.
I switched out the one on the fuse panel twice before I realized it wasn't the one responsible for the turn signal flasher.
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