Anyone know a routine to diagnose a no-start no-pump problem on my 1974 450-SL? This car had a hard frontal impact - say 6 + years ago, and has not been started since..... Now I hear the relay clicking but no pump action... IS THERE AN INERTIA SWITCH/ACCIDENT SENSOR OR OTHER DISABLING DEVICE ON THIS YEAR AND MODEL? If no..... any other recommendations before I pull the pump and hotwire it to check?

Also - Cannot get car to fire on starter fluid alone - but it has an updated ignition and HUGE spark.... Have not yet checked compression but it sounds good and must have been going about 100 MPH when it hit the concrete barricade as it tore the right wheel clean off. Anybody have experience starting these fallen angels?

PS: Emerald Green metallic or it wouldn't be worth the bother....but oh what a beauty.