05/18/2026
Holy Grail Labs e21 fusebox upgrade. this gets rid of the unreliable and somewhat expensive ceramic fuses for modern blade style. these older style fuses are famous for warming up and melting the fusebox before the fuse itself blows, another issue is with the clips themselves that tend to break at the base. you can see in the second picture where a repair was made.
this is v2 which also replaces the relays for a completely reliable solution to this problem. you also get the added bonus of fault lights that can tell you if you have a blown fuse at the flip of a switch.
if your e21 fuse panel is starting to fail or you have weird electrical issues, consider this kit.