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Complex, yet probably simple electrical concern:

vandelay industries

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If we could look at this first diagram, this is how i was running my electric fan (a Spal by the way) for the past year or so with no problems whatsoever:

hQZ2HJy.jpg


But today i said what the heck and wanted to install the 3 prong lighted switch i got last year with the fan, but ended up not using it because i had trouble getting it to work and thus went with the 2 prong toggle above. Again, that setup worked totally fine this past yr.

So, this is the setup i tried today:
VNpP12X.jpg


After i got it all hooked up and tested----the fan and switch light worked fine, i then buttoned everything up. To do this, i had to disconnect and reconnect the wires due to the way my gauge console is setup.

So after everything is buttoned up, i get nothing----no fan and the switch does not light up.

So, let's look at the diagram of the fuse panel:
xa3njcc.jpg


This past whole year i was getting power to the switch from slot #1. i took a test light and there was no power coming from #1 or #2, but there was power coming from #3, so that's what i'm using now and back to the original 2 prong switch because i need the fan more than i need the lighted switch because this is my daily driver. The fan works fine now.

1) i'm thinking i "blew" something related to #1 and #2. If so, what? And how do i fix/reset this?

2) Do i now need a fuse going from the fuse box to the switch if i want to use the 3 prong lighted switch? (My gut feeling is yes, but i'm not clear why?)

3) What caused the problem?
 
Get the power from an underhood source, run it through a temperature switch, delete the toggle.
 

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