Good document to compare...
http://www.wilmink.nl/pierburg/brandstofpomp_oldtimer_ombouw.pdf
( :yo: kudos to Cammie for her help in finding the information I needed!) :first:
chart shows the various specs for the different pierburg pumps ...seems a smart idea to stick to the same pt # ... :der:
7.21440.78.0 .... hard to find for sale online in US ... got one on order from Europe! $131 incl S&H ....(OE) ..... will take a couple of weeks!
The GOOD news ... on systematically checking stuff before pulling the fuel system apart ...I found a loose wire behind the panel ... when i tickled the wires ...pump fired up & showed normal pressure!!
eace: ... now to chase down the wiring glitch!!