David Marshall wrote:

> Hmm, grounding the yellow wire to the cylinder head and the light goes out
> tough...  so, what gives?  Bad ground to the top of the oil filter
> assembly?  Help!

David,

An intriguing problem, I must admit. I cant be of much help either, as I don't
have much experience troubleshooting oil pressure systems (although I did it
endlessly on my Squareback - not finished yet), but what I want to say is, did
you try to ground the wire to the base of the sender to check if the ground to
the top of the filter is good? I get the feeling you only grounded it against
the cyl. head, try to ground it to the base of the sender and to the filter
ass'y itself. Then you will at least see if those part gets its grounds right.
If not, we have heard of bad grounds under the dash lately.

PerL
87 Syncro 112i