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2002 Chevy 2500 Exp Van/N Safety Switch

Old Jan 1, 2016 | 1:57 PM
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Default 2002 Chevy 2500 Exp Van/N Safety Switch

can anybody tell me what the 4 pin plug on the Neutral Safety Switch is for?
I found a diagram and schematic for the 7 pin plug
I have spent about an hour on google and cannot find a wire diagram or schematic for this particular plug...
if you could leave a link or any info would help...
(same problem as my original post)
Thanks

Luke in OKC
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Old Jan 1, 2016 | 4:31 PM
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Post the pin layout for the 7 pin. On my truck (same van) it has a white black yellow and light grey wire.
Maybe the info to the BCM for the backup lights?
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Old Jan 1, 2016 | 4:34 PM
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Standard® S-795 - Back Up Light Switch Connector
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Old Jan 1, 2016 | 5:00 PM
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Default 4 pin connector

yes that is the 4 pin connector...
been workin on this issue for abt 2 hrs today... unplugged the 4 pin connector, put in new fuse, turn truck to run & started, fuse blew...
w 7 pin plugged in adn 4 pin unplugged put ohm meter on side of fuse that feeds the BU/NSS and it toned out to ground??? unplugged the 7 pin connector and it did not ohm to ground??? im not sure if the fuse issue has burned up the BU/NSS or not... starting to be a real headache.....

do u kno how to check DC amperage? Im not sure if I have a meter that will do this... thanks

thank u for all ur help
Luke in OKC
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Old Jan 1, 2016 | 8:16 PM
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Did you just relpace that NS switch? Maybe its faulty.....
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Old Jan 3, 2016 | 9:19 AM
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yes I replaced the NSS... but when I put it all back together the fuse popped again? now Im not sure if the (new) NSS is burnt up??? this is gettin to be almost more than I can handle... thanks for your help... keep an eye on this thread, Im taking the van back to the alarm shop in the AM...
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