I lent all my CDs and manuals to a friend. I just did a mess of work on my W123 300D and I want afraid to do it without manuals. I have even rebuilt a few of these and I never remember hooking up a wire that Picks up the RPM. It can't be on the fuel pump--no wires except a few pumps have 3 for emissions, or cylinder head--there is only a glo plug harness and temp sensor--and the block has a TDC sensor that doesnt even have to be reconnected--and for the life of me, I cant "THINK OUT" where the RPM sensor goes--

Reason is , my RPMs on my dash guage are suddenly zero/Dead. but the car runs fine...does anyone know what I did? The last thing i did before I noticed this was re time my Pump...