My blinkers are so dim, and I cant figure out the problem. My headlights, brake lights and hazard lights all work fine. But, when I flip my blinker on they are so dim... So far I have replaced the battery, voltage regulator, flasher, checked the grounds and replaced the front blinkers. Since replacing the front blinkers, they appear to be a bit brighter but the hood scoop lights and back blinkers are practically not noticeable. Last thing Im thinking about is maybe, getting a new alternator. The one I have seems pretty old, and likes to squeak when i start up the car. Any other suggestions...??? I have a 69 coupe with a 351C.
Cant figure out elec. problem...
Random155
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My blinkers are so dim, and I cant figure out the problem. My headlights, brake lights and hazard lights all work fine. But, when I flip my blinker on they are so dim... So far I have replaced the battery, voltage regulator, flasher, checked the grounds and replaced the front blinkers. Since replacing the front blinkers, they appear to be a bit brighter but the hood scoop lights and back blinkers are practically not noticeable. Last thing Im thinking about is maybe, getting a new alternator. The one I have seems pretty old, and likes to squeak when i start up the car. Any other suggestions...??? I have a 69 coupe with a 351C.
Sounds to me like bad grounds in the blinker circuit(s). You said your headlights, hazzard lights etc. are fine. That rules out battery, alternator, regulator etc.
When I say grounds I'm not referring to the main ground connections. Many of these lights like the hood indicator and turn signal bulbs have one wire...the plus going to the bulb. The minus side is often a daisy chain. Like the hood indicators minus side goes through screw mounted housings where the screw or nut needs to scrape through paint and/or rust. Then the bulb itself goes in a corroded socket.
Spend time cleaning up anything that is a connection, screw, bulb etc. Good idea to use contact/bulb grease on these connections. This is not quick and easy.
When I say grounds I'm not referring to the main ground connections. Many of these lights like the hood indicator and turn signal bulbs have one wire...the plus going to the bulb. The minus side is often a daisy chain. Like the hood indicators minus side goes through screw mounted housings where the screw or nut needs to scrape through paint and/or rust. Then the bulb itself goes in a corroded socket.
Spend time cleaning up anything that is a connection, screw, bulb etc. Good idea to use contact/bulb grease on these connections. This is not quick and easy.
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1,620 Posts
Sounds like you're on the right track. Alternator etc. would affect all the lights. By replacing the front ones you proved something was wrong. Check the rest of them for corrosion in/on bulbs and sockets and the rest of your grounds. The turn signals work off diff filaments in the bulbs, so could even be corrosion in the turn signal switch. Also on seperate flasher.
Edit: Good advise, I'm slow typing.
Edit: Good advise, I'm slow typing.
Joined
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239 Posts
How fast are they flashing? This can be a clue to the problem. The flasher is current operated so if they are flashing very slow then a bad ground is likely (limiting current flow). If they flash very fast then your problem may actually be a short and the extra current makes the flasher work faster--and also prevents the current from building up high enough to blow the fuse.
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