MTU monitor the speed of the primary turbo on their 2000 series engines with MDEC controls. They switch the secondary turbo on at about 90,000rpm and set an alarm at about 105,000rpm.
The turbo has an extended magnetic nut holding the inlet turbine wheel on, and an inductive speed sensor...
Sean,
AMP usually put their part no. on the connector.
You may need a magnifying glass to read it though.
Try Farnell or RS if you have them in your area.
A Google search with the AMP part no. may be worth a try.
Brendan
24volt
European and Japanese heavy trucks.
Many Japanese small trucks and 4X4s.
Most earthmoving machines, cranes etc.
Most military vehicles.
Most large marine engines.
Rail engines.
Some large self contained agriculture equiment,eg combines.
12volt
Cars.
Most agriculture equipment, tractors...