Cold starter problem from hell
It all started with a cold morning no start so i jumped it with my dodge Durango that would work for a few months then it had to be running and that worked for a few months land that stopped working and i had to let it set in the sun till about 3 pm then it would start fine abd i could take it to the shop and work on it.
Being that the shop work came first it was a long process the triumph manual has you check everything as ohms so if you have a complete break you can find it but not good if you have a high resistance wire. So i would take every component and figure out the voltage values and then put them on my computer for future reference.
Parts i have tried ecu, tip over sensor, crank sensor, coils, soldering both battery cables, cleaning all of the connectors on the bike, removing the ground blade connector and soldering it together, jumping grounds and jumping positives to eliminate problems in the wiring, hours of studying and conferencing with three other experts.
So today I will install 2 new batteries and will just hook up one to start with and see what happens. If that doesn't work then I will hook up the second one .