95 3vze overslept

Hello all..
I left my rig at our cabins (shacks) in Durango 7 years ago and just found time to revisit. Many issues to deal with here, but the 4Runner is top priority, after rodent eviction. What I’ve done is siphon the fuel and verify start with a shot starting fluid. Fuel pump and gauge not working. Jumpered the 12v/Fp and get 11.75v to connector under rear passenger seat, but with the plug connected and dm probes pushed into the pump side of connector, only getting 8.6v. No voltage to connector w/o jumper. Seems I have multiple issues..? Shorted pump and vacuum/relay issue..? Any troubleshooting tips appreciated. Going to put the peanut grinder to it for access to replace the pump as soon as I find a good location, then replace the filter. Again, I have a full plate here, so any direction is appreciated.. Jaxn