STARTING PROBLEMS

I’ve encountered a problem starting my v1100 sport 2003.
recently i replaced all the relays and some of the wiring to them as insulation was cracked and detached from spade connectors. also i removed faulty alarm immobiliser, replaced diode (just incase,( the correct way round)) plus new hgh output battery.
relay box was dammaged so i removed it, replaced spade connectors and fitted relays direct to new spade connectors. checked all earth connections where i can. i checked the wiring with colour wiring diagram i found on the net.
i replaced voltage regulator/ rectifier . although it was not the correct one i adapted it.
all was ok and started well with 13 to 14 volts showing in charging.
however just recently i’ve encounted starting problems. when i switch off, it won’t re-start, unless i use a jump from a car. other times it just stalled but re-started later.
now it refuses to start. when i turn the start key the ignition light goes out & stays off for about 3 to 8 seconds then comes on.
i have exhausted all possibilities, can you help with some other possiblities