Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Revs not going to idle

Well the good? news is you have a great degree of consistency with your findings Laurens. It would be normal for dip beam only with TSM disconnected as it energises the dip/main relay coil to give high beam when selected by stalk toggle. It appears your faulty car requires it's OE TSM. Certainly 2014 on cars had a different TSM, connector and loom, maybe there were other earlier undocumented variants of same?

Regarding removing VSS signal to ECU, I assumed the bomb tails were just twisted and or soldered wires with one of those screw on plastic cover/insulators, which would make disconnection easy. From your comments I guess not - maybe a large crimp?