Hoping this is resolved since it is an older thread but. . .I had a crank/no start recently on a SVX. This was after reinstalling a radio, cigarette lighter and electrical volt meter behind the dash. I retraced and cleaned everything, literally. with no luck. Replaced ECU with no luck. No CEL codes so assumption was cam and crank sensors were good. I replaced the main relay and fuel pump relay out of frustration even though they tested okay. Started right up with much joy!
On a side note, hope all our West Coast brethren are okay.
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Freedom van Go
1989 Westy, 3.3L SVX
Duncan