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B&M Megashifter - Reverse Lights won't work

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Old 02-23-2020, 09:25 PM
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B&M Megashifter - Reverse Lights won't work


I'm pretty sure it's wired up correctly. I even went through and redid the wires that were questionably hooked up back when I sucked at electrical. Hopefully y'all can see the picture. The fuse is not broken, I already checked. The reverse lights wont kick on in any gear. The gear selector indicator is damn near perfectly aligned, if that's relevant info. The reverse light bulbs are not broken. It is grounded to one of the nuts on the shifter assembly, as shown in the picture. If anybody can help me narrow down why my reverse lights won't activate, I have a fine reward available.
Also, the (B&M) relay didnt click at all through each of the gear selections nor when I turned the key to the on position.

Last edited by Wickydooda; 02-23-2020 at 09:53 PM.
Old 02-23-2020, 09:53 PM
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: B&M Megashifter - Reverse Lights won't work

I don't know if this is happening to anyone else, but I can only see the very top of your picture.
Old 02-23-2020, 09:54 PM
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Re: B&M Megashifter - Reverse Lights won't work

Originally Posted by NoEmissions84TA
I don't know if this is happening to anyone else, but I can only see the very top of your picture.
I can view it properly (on mobile).
Old 02-24-2020, 06:07 PM
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: B&M Megashifter - Reverse Lights won't work

I can see it now.
Old 02-24-2020, 06:24 PM
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Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: B&M Megashifter - Reverse Lights won't work

The only thing I can see from your picture is that orange wire with the black stripe looks like it goes to the steering column area where all those wires are cut.
It appears that it is cut also. Hard to tell though.
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Old 02-25-2020, 12:21 AM
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Re: B&M Megashifter - Reverse Lights won't work


Wiring diagram shows that the ORG/BLK wire referenced above goes from the ECU to the Gear Selector Switch, which sounds about considering the context of this post. Will add more detail if I make any progress...
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