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SN95 Cobras
reverse lights not workin
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<blockquote data-quote="SNAKEYE" data-source="post: 3432601" data-attributes="member: 22534"><p>Fuse #1 in the Instrument Panel fuse panel serves the backup lights. You will find that your #1 fuse is okay because it also serves the air bag diagnostic monitor, the electronic flasher, the rear window defroster, and the convertible top switch (if so equipped), and you haven't mentioned any of those not functioning.</p><p></p><p>After the fuse in the circuitry come a couple of connectors (any of which could be corroded), and then the backup light switch. It is located on the left (driver's) side near the bottom of the tranny's main section (bellhousing forward, main section middle, tailsection rearward). The color of the wires going to it are purple/orange (from the fuse) and black/pink (to the backup lights). Check for +12V at the P/O wire with the ignition switched on. Check continuity of switch (short circuit with tranny in reverse, open circuit with tranny in any other position). Check for +12V on the BK/PK wire with the ignition on and the tranny in reverse. No continuity and/or no +12V on the BK/PK wire indicate a bad BU light switch, or bad mechanicals that operate from within the tranny.</p><p>From the switch the BK/PK wire goes to the rear, passing through a couple of connectors along the way (any of which could be corroded), until it reaches the trunk where it splits and goes to the individual backup lights. Then from the other side of the backup lights a ground wire (solid black) runs, would you believe, all the way forward to "Below rear of center console" (to quote the 'Grounds' location diagram '10-10' from the service manual). This point appears to be near the parking brake switch inside the car beneath the e-brake handle within the console.</p><p>You could test to eliminate the possibility of a bad ground by disconnecting the BK/PK wire in the trunk and applying a +12v source of power (long jumper wire from the (+) terminal of the battery) to the BU light side of the disconnected plug. If the light(s) go on the problem is in the BK/PK wire forward to the switch. If the light(s) do not go on the trouble is in the black wire forward to the ground connection, or the ground connection itself.</p><p>Get to it, you have some diagnostics to perform!</p></blockquote><p></p>
[QUOTE="SNAKEYE, post: 3432601, member: 22534"] Fuse #1 in the Instrument Panel fuse panel serves the backup lights. You will find that your #1 fuse is okay because it also serves the air bag diagnostic monitor, the electronic flasher, the rear window defroster, and the convertible top switch (if so equipped), and you haven't mentioned any of those not functioning. After the fuse in the circuitry come a couple of connectors (any of which could be corroded), and then the backup light switch. It is located on the left (driver's) side near the bottom of the tranny's main section (bellhousing forward, main section middle, tailsection rearward). The color of the wires going to it are purple/orange (from the fuse) and black/pink (to the backup lights). Check for +12V at the P/O wire with the ignition switched on. Check continuity of switch (short circuit with tranny in reverse, open circuit with tranny in any other position). Check for +12V on the BK/PK wire with the ignition on and the tranny in reverse. No continuity and/or no +12V on the BK/PK wire indicate a bad BU light switch, or bad mechanicals that operate from within the tranny. From the switch the BK/PK wire goes to the rear, passing through a couple of connectors along the way (any of which could be corroded), until it reaches the trunk where it splits and goes to the individual backup lights. Then from the other side of the backup lights a ground wire (solid black) runs, would you believe, all the way forward to "Below rear of center console" (to quote the 'Grounds' location diagram '10-10' from the service manual). This point appears to be near the parking brake switch inside the car beneath the e-brake handle within the console. You could test to eliminate the possibility of a bad ground by disconnecting the BK/PK wire in the trunk and applying a +12v source of power (long jumper wire from the (+) terminal of the battery) to the BU light side of the disconnected plug. If the light(s) go on the problem is in the BK/PK wire forward to the switch. If the light(s) do not go on the trouble is in the black wire forward to the ground connection, or the ground connection itself. Get to it, you have some diagnostics to perform! [/QUOTE]
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reverse lights not workin
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