Before I forget, 1987 R10 1/2 Ton, 305/700R4. OK, So I replaced the switch on the dash and I replaced the switching valve with a new 65 PSI Pollack unit. I'm going to fill up the RH tank so that I know how much fuel it should show on the gauge and then I'm going to start the troubleshooting over again.
One quick question, what is the procedure to test the pumps using the relay pigtail under the hood?
Also, when I unplug the transfer valve underneath, it was my understanding that it should park the fuel gauge at 3:00, however, it doesn't seem to affect the gauge. Thoughts?
Thanks again Hatzie for all your guidance,
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