Looking to add a circuit to my fuse box to drive a small amp/dsp (Match M5.4). Going to use either a 30 or 40a fuse. 
 

I believe one of the following two is what I need (both with the 4mm2 wire):

 

000979306E

000979308E

 

Is one of these correct? I believe there may be two different ones, some for the standard fuses and some for the slightly chunkier fuses. 

4 minutes ago, bdavbdav said:

Looking to add a circuit to my fuse box to drive a small amp/dsp (Match M5.4). Going to use either a 30 or 40a fuse. 
 

I believe one of the following two is what I need (both with the 4mm2 wire):

 

000979306E

000979308E

 

Is one of these correct? I believe there may be two different ones, some for the standard fuses and some for the slightly chunkier fuses. 

Possibly  if you know what you are doing but sounds like you are just playing with it, so my advice is come direct from the battery with the 

correct rated fuse at the battery.

Its surprising what troubles you can get into, either taking out the ECU or even set on fire 

I understand well enough that I am well within the current ratings for the spare fuse socket, wire sizing, demand from the DSP - what I’m not sure of is if the part itself is correct. It’s not particularly clear from either the service manuals or the parts diagrams I have access to.