I have a 2000 S-10 ZR2 (though ZR2 may not matter much for this question). I noticed on the underside of both frame rails there is a plug with a green cap on it. Each plug is a 6-wire plug with only 5 terminals occupied. Also, at the back side of the spare, right above the bumper, there is a long flat plug with maybe 8 wires going to it, again this is capped. Any idea what these are for? I have GM service info on CD and can't find any info on these.
I don't have any need to know besides curiosity, and a whole bunch of other ZR2 owners that are also curious. My first thought was that it was for trailer wiring, but that was when I thought there was only 1 plug back there.