fuel tank selector Switch schematic

[pontgta]

I have an 87 Silverado, and the previous owner bypassed(spliced) the tank selector switch wires together. I am trying to find out why. Does anyone have a picuter or schematic where the wires go on the switch itself. I found the switch and the connector behind the dash. I can reinstall them but do not know where they go.

Thanks

[datguysaL]

there was 2 types of switches for the tank selector.

one engaged when it was switched

and the other just did contact when u pressed it.

you can feel the difference when u push the buttons.


the previous owner more than likely intalled the wrong switch and got fed up so he decided to splice the wires.

[Xcaliburpcs]

Cant get any schematics but found this

[USSkoval]

This is for the 4-wire switch I believe.

http://67-72chevytrucks.com/vboard/s...d.php?t=373301

[pontgta]

Thanks for all your responses


I do have 4 wires, but the colors are

brown
brown/white
Black
Grey

I know where the black and grey go , but not the brown's

[pontgta]

Originally Posted by USSkoval

This is for the 4-wire switch I believe.

http://67-72chevytrucks.com/vboard/s...d.php?t=373301

Thanks helps me out some, but the colors are a bit confusing

[pontgta]

Ok put on the new switch, and seem to be working.... The truck rruns fine on the passenger side. I turn off the truck and switch the switch to the LH and put the key foward and does not start. I here the fuel pump on and is on while cranking. i have had someone switch the switch while i was underneath and the sides switch to thew respective sides whith the switch

I have replaced the switch and the tank selector valve because i had nothing before.

the gauge moves now when i put the ignition foward and flip the switch i thought i was out of gas amd faulty guage, but put fuel in the drivers side and the guage moved.

Any suggestions?

I think it might be the pump on the left side, althouh i hear it running any way to check it out...

[pig rig]

hallpearl nice post I've saved that to my pictures I may need it some day

[pontgta]

Yes, thanks for the post. I thought i had posted the final fix for this, but i guess not.

The end result was when i wired the switch up correctly, i had 1 more problem to fix.

I dropped the tank and found the fuel pump to be working, but the hose that was connected to the fuel pump outlet was deteriorated and was not connected to anything. I got new 3 inch fuel hose, and has been working since then....