Quote:
Originally Posted by ray_mcavoy
That's definitely a strange problem you have there.
My best guess is that you ended up getting a defective NSS that is shorting the reverse light circuit to the switch's metal backing plate.
With the switch off the column, things worked okay because the backing plate wasn't grounded. But installing the switch grounds the plate to the steering column and that in turn grounds the reverse light circuit and blows the fuse.
To test this theory, remove the NSS switch and use a multimeter (set to the Ohms scale) to check the continuity between each of the reverse light terminals and the metal backing plate. If the switch is good there should be no connection between the metal plate and either of the terminals.
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Well after looking at the two switches I noticed the new one was a little different and one of the prongs that is attached to the plate is real close to the edge and sure enough, when I mocked it up to the column it was touching it. So a little grinding took care of it. Now only if I can get my gauge lights to work I think all my lighting issues will be resolved.