Before finding this thread, I retraced your other now very confused thread in order to find reference to ----
“the difference seems to be in the rack and in the electrical do-hickey that screws into the output side of the pump.”
Your statement --- “Please see my question regarding the P/S switch”, within your previous thread, most certainly did not lead me to this new thread.
It would be appreciated if you could put the same amount of effort into setting out your problems, as you expect to receive from those spending time trying to solve them.
I now gather that you have the engine speed system, rather than the road speed sensing arrangement. Unfortunately the manuals I have give no details regarding the switch you refer to.
However I would expect that as you suspect it may be related only to trouble indication. Leave it disconnected meantime pending your next testing.
