Ok. So I gather that the plastic used to make the PCB boards on my fuse box after 15 years of hot and cold causes minor cracks in the circuits on the board. After many years of this the arcing that the voltage does to jump these cracks puts strain and extra load on the relays. The relays in turn run hotter and the excess heat causes them to cook the plastic of the relay turning the outer shell brown. If left uncared for this process will continue until the actual plastic under the relay starts to melt. After melting the relays stop working and the electrical current continues and eventually a fuse box fire starts. Much like the Jan 1st fire in a Carpark in Liverpool which claimed lots of cars... upwards of 10 million pound I read.... so. For those with more experience.... do I just replace the fuse box and relays for brand new and expect to get another 15 years out of the new hardware? I’ve got several browning relays and my SAI Pump has run twice after I turned the car off and took the keys out. RL 10 didn’t smell weird or seem bad but it was definitely stuck open at one point. LR direct has a box and all new relays for $228 delivered. Can I use the same old fuses? I don’t want to start a fire and burn my house down. So.... is my logic correct in identifying how a fuse box dies?