Oil Pressure Sending Unit?

[bd]

I'm picking these up today for my truck.  Are these the right ones?

Sender to the gauge:
http://www.autozone.com/autozone/parts/Duralast-Oil-Pressure-Switch/1987-Chevrolet-V10-1-2-ton-P-U-4WD/_/N-iigzbZ8znc6?itemIdentifier=18884_124053_9275_5673

Switch to the fuel pump relay:
http://www.autozone.com/autozone/parts/Duralast-Oil-Pressure-Switch/1987-Chevrolet-V10-1-2-ton-P-U-4WD/_/N-iigzbZ8znc6?itemIdentifier=19001_0_9889_5835

Both components look correct for your truck. 

Also, what else do I need to hook up the sending unit to the gauge?  I've heard about a tube filled with oil attaching to the back of the gauge, etc.

The 'tube filled with oil' is in reference to a 'mechanical' gauge - ignore it.  Use 2 wraps of Teflon tape or liquid Teflon sealer on the switch threads, liquid Teflon sealer on the sender threads, connect the lgt brn wire (that you're holding in the pic) to the gauge sender (you did verify that this is the gauge wire didn't you?), plug the brown 2-wire connector into the new fuel pump switch and you should be good to go.

[Shawn0331]

Thanks for the help everyone, I got the sending unit and the fuel pump switch both hooked up today. Now I just wonder if the gauge is accurate or not.

Went to 60 when it started up?

[454Man]

Thats a good thing:)

[Irish_Alley]

60 at start up is norm. also it can drop pretty much to 20 when warm

[Shawn0331]

Cool, I haven't run it for long yet. Just moving it in and out of my parents garage.