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in my 87 s10 2.8 4x4 there is a clip for the fuel pump with 2 wires... i used a multimeter to determine one is ground, the other is hot. The multimeter red 8 volts... shouldnt it be 12? Also, there is a wire that's grounded to the frame that is just hanging off somewhere... not sure what its for... Thanks!
 

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hmmm correct me if im wrong........ but the tank grounds using a ground strap...... the two wires going to the tank are ....... fuel gauge and fuel pump........... the fuel pump will only get 12v power for five seconds once the ignition is turned on then it shuts off unless the engine is running.... ecm says so..

one is your gauge and the other is pump supply ....... the other is your ground
 
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