just an update...

I did find the date tag on the harness and it is F.D. 13.10.99.

The green label date code on the ETA is worn off, but has the identical printed part numbers shown on another site for a 94. Mines a 93 so?

I was worried that cute little critters might have nibbled on the wiring underneath like the oxygen sensor wire, but all is OK there too.

There was no gas or gas smell in the Vacuum port on the fuel pressure regulator.

I put a mitivac tester on the EGR valve and the idle does slow down if with vac applied.

I have ordered a new stop light switch just to see if it will clear the code.

It starts and idles fine but "bogs" if you open the throttle quickly and the CE light still isn't on.

Thanks