01 F4i keeps blowing starter relays
 

G'day,
I my F4i keeps blowing starter relays, 2 so far. Not sure the origins of the first starter relay, when it blew it i had to replace the plug from the wiring harness because it was melted so badly.
The 2nd starter relay was a cheapy from China (it came with the 15amp fuse, not sure why).

My mechanic thought it might be the regulator/rectifier but did a voltage test while the bike was running and was getting between 13.7 and 14.5 (no higher).
Note: Bike has been made into a stunt bike buy the previous owner with a few extra electronic bits... jet ski kill switch, speedo healer, fans on a switch.

Any insights would be appreciated

https://cimg6.ibsrv.net/gimg/cbrforu...86a14d9618.jpg

Check your cable resistances, starter draw, and grounding points on the battery cable. Resistance causes heat. Everything in the circuit can take more heat than that little spot.