So I've just finished up the fuse and relay center for my swap and I'm uncertain on the fuse amperages. I was hoping someone in the know would double check me.



Here are the circuits and fuses:

Mini Fuses:

ECM constant power: (two conductors directly to computer) @ 10 amp
Emission: (evap purge solenoid, evap canister vent) @ 15 amp
Coils: (bank 1 & 2 coils) @ 15 amp
Sensor: (maf and front O2 sensors) @ 15 amp
B1 Inj: (four conductors to B1 injectors) @ 15 amp
ECM Ign: (two conductors directly to computer) @ 15 amp
B2 Inj: (four conductors to B2 injectors) @ 15 amp

Maxi Fuses:

Fan #1: primary fan #1 @ 40 amp
Fan #2: secondary fan #2 @ 40 amp
Fuel pump: stock BMW E28 fuel pump @ 20 amp
Main Ign: powers all mini fuses (except ECM constant power) via ignition relay

What do you think of the chosen fuse amperages?

Thanks!
S.F.

 

Bumpo

 

Good job. Glad to see someone not group things together and do the typical 4 fuse setup.

Here is factory specs:
ECM 10
Emission 15
MAF 15
ECM ign 15
Factory has odd injectors/odd coils 20
Even injectors/even coils 20
O2 10
Main IGN feed 30

Fans fuses are good, will cover pretty much any fan setup.

 

ECM constant 10
Fuel pump 20

I think you are good. You may want to separate the MAF & O2 for troubleshooting problems down the road.

 

Which fuse box is that? What vehicle did it come from?

 

That fuse box looks like it came from a chevy lumina.

 

Awesome, thank you!

I may just do that, would help in chasing any issues.

See below...

Close, came from a 96 Buick Regal. I saw several mid 90's GM vehicles with the same box just configured slightly differently. The box is nice in that you can configure it in many different ways as the small fuses and relays all use the same size pins. One caveat for anyone considering it: the relays used in this box do not have the normally closed pin that physically prevents the relay from being installed backwards and backwards would be bad!

S.F.

 

What terminals do these boxes use? Metripack 280?

Andrew

 

Which ones? The Maxi's or the ATM's and the relays? Lemme know and Ill give you part numbers, hell PM and Ill send you some.