efi Add a little bit of Jaguar

[Healey3000]

After much research into ways to build a power distribution box for an EFI conversion, I settled on using an existing OEM fuse/relay box, one that could be easily reconfigured to suit.

 

The unit is a Rear Power Distribution Box from a 2001 Jaguar S-Type.  It has an input stud that you can connect directly to the battery and from there, relays and fuses can be set up the way you want, fairly easily.  All the terminals can be removed very easily (once you figure out how the terminal retention is designed).  I cut and soldered some of the interconnections to minimize the rats nest but you don't have to, if you get a sufficient length of the harness with the box.

 

I now have it configured for:

• An ignition switched relay to power the ECU, fused
• A relay that will be turned on by the ECU ("fuel pump relay")
• Three fused 40A relays that are switched on by the single fuel pump relay
• A fan-out to nine fused outputs off the three 40A relays
• Two additional 40A relays as spares, fused, for something like a radiator fan, etc.

 

These boxes are readily available on ebay or at the junkyard.  I think I paid $20, including shipping, loaded with all the relays and fuses.  What you see in the photographs below is what's left after I pulled out all the terminals and fuses I don't need.

 

Hope this proves useful to others.

[TobyB]

You'll need some periodic refills for that choice of wiring product, you know...

 

t

 

[Healey3000]

Nah, I conducted an exorcism just to be sure.  I'm confident that the Bavarian spirit will overcome the Darkness.

 

The relays do say "Jaguar" on them but if you flip the box over, it says "Ford" (this same box was used on the Lincoln LS).  Surprising how difficult it is to find just the right fuse box...

[LimeySteve]

Always keep the smoke inside the wires

[TobyB]

Quote

Surprising how difficult it is to find just the right fuse box...

Agreed- for a Volvo 122, I looked high and low until I found an early Mitsu Montero box that has 

a decent fuse compliment in a physically- reasonable package.

 

The variations are mind- boggling.  

 

t

 

[ray_]

2 hours ago, TobyB said:

Agreed- for a Volvo 122, I looked high and low until I found an early Mitsu Montero box that has 

a decent fuse compliment in a physically- reasonable package.

 

The variations are mind- boggling.  

 

t

 

 

Complement.

 

You're welcome!