When I close my door a light comes on under the car in the back by the spare tire area.What is the purpose of this.It goes off in a minute or so.

That's part of the courtesy light system. Your interior lights should do the same. There's a timer behind the dash that controls it. It should stay on for 15-30 seconds before shutting off.

Does it light up so you san see behind your car or see if anybody is hiding under their to get you

What years had this option, I've never noticed it on my pace car.

It's part of the ZX2 Convienence Group, which started about '77. My '78 has it as an option.

If your Pace Car has the interior light delay so they stay on for a short time after closing the door, then you have the option.

I'm pretty sure I've got that option on mine (at least I have the delay on the interior lights), but honestly never noticed whether there was a light under there or not.  I don't have the spare tire holder anymore as it was busted and when the mechanic who put the new rear spring in for me forgot to put the holder back on.  Live and learn!

Is the light part of the tire holder or located somewhere else under there?

Must have been standard by 1982. It's on mine, but no option listed on my build sheet.

[QUOTE=Gunslinger]It's part of the ZX2 Convienence Group, which started about '77. My '78 has it as an option.

If your Pace Car has the interior light delay so they stay on for a short time after closing the door, then you have the option.[/QUOTE]

Okay so I believe I've got a light out   Cause I have the interior delay and the ZX2 option and I've never seen this light, guess I'm going to check something