Fuel Sending Units and A-Body Fuel Tank Map

"Dart67" said

I have not followed the Mad Max movies. What is a Mad max S.O.L. light ?

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In the movie as he's being chased a red light comes on to let him know that he's almost out of gas (I take it the original gauges didnt work anymore). It looks to be a tow trailer brake light Jerry rigged up to the steering column.