1992 corvettes headlights
Melting Slicks
Joined: May 2003
Posts: 2,078
Likes: 281
From: Dyersburg TN
is it moving at all? may have to have someone turn the headlights on while you stand outside to see/listen. You can also put a test light on the plug and watch what happens when turned on.
If good power, good ground, good gears, good motor it will work
Also check linkage for binding. You said motor is new, did everything get assembled in correct position?
If good power, good ground, good gears, good motor it will work
Also check linkage for binding. You said motor is new, did everything get assembled in correct position?
Thread Starter
Intermediate
Joined: Jan 2023
Posts: 47
Likes: 5
From: Chattanooga
is it moving at all? may have to have someone turn the headlights on while you stand outside to see/listen. You can also put a test light on the plug and watch what happens when turned on.
If good power, good ground, good gears, good motor it will work
Also check linkage for binding. You said motor is new, did everything get assembled in correct position?
If good power, good ground, good gears, good motor it will work
Also check linkage for binding. You said motor is new, did everything get assembled in correct position?
Melting Slicks
Joined: Mar 2002
Posts: 2,876
Likes: 764
From: Sligo PA
Unplug the connector from the motor that isn't working. Use jumpers to apply battery power directly to the motor. See if the motor moves. If it does then you probably have a bad ripple current or isolation relay. This happened on mine with new motors. The contact in the relay was passing voltage, but corrosion on the contact face was bad enough that it couldn't pass enough current to allow the motor to move. I ended up replacing both of the factory relays with a new relay box and two standard 5 pin relays and a toggle switch. It works so much better now.
Thread Starter
Intermediate
Joined: Jan 2023
Posts: 47
Likes: 5
From: Chattanooga
Unplug the connector from the motor that isn't working. Use jumpers to apply battery power directly to the motor. See if the motor moves. If it does then you probably have a bad ripple current or isolation relay. This happened on mine with new motors. The contact in the relay was passing voltage, but corrosion on the contact face was bad enough that it couldn't pass enough current to allow the motor to move. I ended up replacing both of the factory relays with a new relay box and two standard 5 pin relays and a toggle switch. It works so much better now.
Melting Slicks
Joined: Mar 2002
Posts: 2,876
Likes: 764
From: Sligo PA
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Safety Car
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Unplug the connector from the motor that isn't working. Use jumpers to apply battery power directly to the motor. See if the motor moves. If it does then you probably have a bad ripple current or isolation relay. This happened on mine with new motors. The contact in the relay was passing voltage, but corrosion on the contact face was bad enough that it couldn't pass enough current to allow the motor to move. I ended up replacing both of the factory relays with a new relay box and two standard 5 pin relays and a toggle switch. It works so much better now.
Melting Slicks
Joined: Mar 2002
Posts: 2,876
Likes: 764
From: Sligo PA
True, I forgot about that. I would still apply power directly to the motor as a test. At least it would eliminate the motor being the problem. Or it will verify that the motor is the problem.
Melting Slicks
Joined: May 2003
Posts: 2,078
Likes: 281
From: Dyersburg TN
bad but not broken connection (voltage vs amperage) if one of the relays/connectors does have a bad connection, it could show voltage and still fail under load (amperage). applying current direct to the motor will eliminate all the relays and connections as a source.