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Corvette
C5 Forum
How To Disable Twilight Sentinel - '97 MODELS ONLY
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<blockquote data-quote="Gummiente" data-source="post: 241807" data-attributes="member: 6743"><p>If you decide to do the Twilight Sentinel bypass, here's the procedure I used on mine. Took me about 20min with my arthtitic old hands...</p><p></p><p>MATERIALS NEEDED</p><p>- 4.7K OHM .25 W thru hole resistor</p><p>- two lengths of string or long bootlaces</p><p>- body panel tool or credit card</p><p>- small gauge black zip ties</p><p>- electrical tape</p><p>- flat tip jeweller's screwdriver</p><p></p><p>PROCEDURE</p><p>1) Using the body panel tool or credit card, gently pry up the closest side of the defroster vent grille, then gently remove it from the dash.</p><p></p><p>2) Immediately secure the sensors at each end by tying a string/shoelace around the wires just under the connectors and tie off the other ends to the steering wheel and passenger grab rail. If either sensor accidentally pops out and drops down the vent hole, the only way to get it back is a full dash disassemble!</p><p></p><p>3) Do not remove the large black bulb shaped sensor on the right side of the grille, that is the Sun Load sensor for the HVAC system. The Twilight Sentinel sensor is the small one on the left side of the grille that looks like an LED. Gently turn the sensor 1/4 turn counter clockwise and remove from the grille.</p><p></p><p>4) Using the flat tip jeweller's screwdriver, gently lift up the side of the connector and then separate it from the sensor.</p><p></p><p>5) Replace the sensor in its hole and turn it 1/4 turn clockwise to secure.</p><p></p><p>6) Bend each end of the resistor 90 degrees as close to the resistor body as you can, then insert each end into the pins of the connector, allowing the friction fit to temporarily hold it in place.</p><p></p><p>7) Cut a 3" piece of electrical tape, secure one end to one side of the connector, then bring it up and over the resistor, securing the other end to the other side of the connector. Then wrap a 2" piece around the connector body to secure everything in place.</p><p></p><p>8) Turn the ignition to "ON" and verify the headlights do not pop up. Check the manual operation with the headlight switch. Obviously, this step should be done inside your garage/carport.</p><p></p><p>9) Using a small black zip tie, secure the connector to the underside of the grille as close as possible to the sensor. Remove the strings from the connectors. Ensure the Sun Load sensor is still secured in its hole.</p><p></p><p>10) Gently replace the grille in the dash and you're done!</p><p></p><p>MISC INFO</p><p>The resistors can be purchased at any electronics supply store or, as I did, off Amazon. They are normally sold in bundles; I paid $7 for a pkg of 25, which was the smallest bundle I could find. Note that the working space is very tight because of the steep angle of the windshield and short free length of the wiring. Don't forget to wipe the smudges off the windshield when you're done. Be very gentle when working with the vent grille, the 24yr old plastic is weak and brittle from years of UV rays.</p></blockquote><p></p>
[QUOTE="Gummiente, post: 241807, member: 6743"] If you decide to do the Twilight Sentinel bypass, here's the procedure I used on mine. Took me about 20min with my arthtitic old hands... MATERIALS NEEDED - 4.7K OHM .25 W thru hole resistor - two lengths of string or long bootlaces - body panel tool or credit card - small gauge black zip ties - electrical tape - flat tip jeweller's screwdriver PROCEDURE 1) Using the body panel tool or credit card, gently pry up the closest side of the defroster vent grille, then gently remove it from the dash. 2) Immediately secure the sensors at each end by tying a string/shoelace around the wires just under the connectors and tie off the other ends to the steering wheel and passenger grab rail. If either sensor accidentally pops out and drops down the vent hole, the only way to get it back is a full dash disassemble! 3) Do not remove the large black bulb shaped sensor on the right side of the grille, that is the Sun Load sensor for the HVAC system. The Twilight Sentinel sensor is the small one on the left side of the grille that looks like an LED. Gently turn the sensor 1/4 turn counter clockwise and remove from the grille. 4) Using the flat tip jeweller's screwdriver, gently lift up the side of the connector and then separate it from the sensor. 5) Replace the sensor in its hole and turn it 1/4 turn clockwise to secure. 6) Bend each end of the resistor 90 degrees as close to the resistor body as you can, then insert each end into the pins of the connector, allowing the friction fit to temporarily hold it in place. 7) Cut a 3" piece of electrical tape, secure one end to one side of the connector, then bring it up and over the resistor, securing the other end to the other side of the connector. Then wrap a 2" piece around the connector body to secure everything in place. 8) Turn the ignition to "ON" and verify the headlights do not pop up. Check the manual operation with the headlight switch. Obviously, this step should be done inside your garage/carport. 9) Using a small black zip tie, secure the connector to the underside of the grille as close as possible to the sensor. Remove the strings from the connectors. Ensure the Sun Load sensor is still secured in its hole. 10) Gently replace the grille in the dash and you're done! MISC INFO The resistors can be purchased at any electronics supply store or, as I did, off Amazon. They are normally sold in bundles; I paid $7 for a pkg of 25, which was the smallest bundle I could find. Note that the working space is very tight because of the steep angle of the windshield and short free length of the wiring. Don't forget to wipe the smudges off the windshield when you're done. Be very gentle when working with the vent grille, the 24yr old plastic is weak and brittle from years of UV rays. [/QUOTE]
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Corvette
C5 Forum
How To Disable Twilight Sentinel - '97 MODELS ONLY
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