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reverse lights (automatic)


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Hello faq I am having some electrical issues regarding my reverse lights. When I go into gear my reverse lights do not light up... I checked and cleaned all the bulb housing, threw in new bulbs, a new safety neutral switch but still have come up empty handed.. any suggestions..? (Also if anyone has a picture of how the safety neutral switch should be hooked up that would be greatly appreciated!) Thank you in advanced.

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Have a look at the switch front left on the transmission box. Pull the wires green/white and blue/white off and bypass them, ignition on. If the lights light up now, the switch is kaputt.

A real pita to replace it. Needs a special tool.

 

Hen

thanks for the reply Hen.. I took your advise and tried it but the results where the same... I di happen to notice that the car has a blue-white cable and a purple white I did not see a green and white..

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OK, next: automatics have an additional 2-wire-harness in the tunnel to the reverse switch that manuals don't have. (Manuals have their switch in the transmission there.) It starts under the car left near the shifter by a connector and runs forward to the switch. Try to get the wires out of the connector and bypass these two. They are violet/white and blue/white. Any lightnings?

 

Hen

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OK, next: automatics have an additional 2-wire-harness in the tunnel to the reverse switch that manuals don't have. (Manuals have their switch in the transmission there.) It starts under the car left near the shifter by a connector and runs forward to the switch. Try to get the wires out of the connector and bypass these two. They are violet/white and blue/white. Any lightnings?

 

Hen

FYI -  some manual cars did have a neutral safety interlock switch that looked at the position of the shift selector rod.  Maybe this feature was USA-only for safety reasons.  Several folks here on the FAQ (including myself) have the two extra wires and some remains of the switch and bracket portion of the shift tower.

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Ah? That's interesting, I've never seen such on  a manual. Do you or anybody else have a picture of that interlock switch? I'd really like to see it.

So, probably of the same reason: prevent the engine from starting with shifted gear...

 

Hen

 

And yes, fuses at first, but I assumed Daniel checked this.

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Thanks for the responses everyone I have since figured out the problem..the previous owner took out the green and white cable but I searched for it and found it in the engine bay ran a cable and it worked perfectly thank you all for the help! (This was the last step to becoming road worthy) [emoji3]

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Ah? That's interesting, I've never seen such on  a manual. Do you or anybody else have a picture of that interlock switch? I'd really like to see it.

So, probably of the same reason: prevent the engine from starting with shifted gear...

 

Hen

 

And yes, fuses at first, but I assumed Daniel checked this.

See this thread

 

 http://www.bmw2002faq.com/topic/120366-shifter-mounting-bolts-to-trans-are-loose/

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