i just need to figure out this final bit of wiring. i'm dealing with the seven wires that are routed to my fuse/relay location:

 

R(12) 12v in run & start from ignition switch

 

R(12) constant 12v from battery positive for ecu power

 

R(10) constant 12v from battery positive for relay power

 

RL(16) ecu power supply - needs 12v in run & start w/ 15a inline fuse

 

R(12) from ignition relay to green fusible link

 

BW(14) ecu power supply - needs constant 12v w/ 15a inline fuse

 

BW(14) from 4way off fuel pump relay - needs 12v in run & start w/ 15a inline fuse

 

 

this is how i figured it out in my mind:

 

i can't tell where the R(10) from the positive battery terminal is supposed to go. i know in his writeup GD says "The 10 will supply two 15 amp circuits through the two relays, and the 12 will supply the green fuseable link for constant voltage to the ECU." with how i understood everything else to be wired up, there's no place for this wire so i probably got this pretty well screwed up and i need some straightening out here.

 

literally everything else is done and ready for an attempt at starting this thing as soon as this last bit of wiring is completed. i've got a bottle of cheap cali champagne in the fridge for when its really truly done...

Just looking over the diagrahm, this is what I would think to be right. Or at least this way would function.

 

Thems some technical drawings:D

 

i guess i should have included all the wires for the relays etc. the first time, so here it is. i didn't really understand which wires would be which on your diagram, Gloyale. if you could clarify using the info above i'd appreciate it.

Gloyale,

 

i tried looking at your changes to my first wiring diagram so i could hopefully figure something out but they don't make sense to me.

 

it seems there's no direct ground for the fuel pump relay in the original configuration.

 

there's no extra wire hanging off the fuel pump relay to run to a fusible link as you show. there's the two BW wires that both go to a 4way junction where one other goes to the ignition module and the other is supposed to receive power, which i supplied from the ignition switched 12v R(12).

 

i thought the R(12) coming from the ignition relay should be sent to a power source, so how can it send power to the ecu?

 

then, the BW wire i originally ran between the ecu and the fusible actually runs 3ways - between the ecu, the ignition relay, and an open end again supposed to receive power as far as i understood.

 

i'm officially lost and i guess i'll have to go to pick-n-pull to see how an untouched ea82's spfi is wired up. i don't always have this much trouble figuring things out but i don't know the functions of each terminal/wire on the relays.

 

my current thoughts are that the fuel pump relay seems like it would have been fine how i originally wired it off the ignition switch.

 

the RL(16) from the grey diode seems to be the signal wire to the ignition relay (so wire that to the ignition switch as well), while the R(12) looks to be the "main" power into the relay (route to fusible link then to R(12) from battery), and the BW to ecu pin 27 and the ignition relay look like a constant supply for the ecu and the open third wire in that junction would need to be sent to a fusible link w/ a 15a fuse.

 

that would look something like this:

i'm officially lost and i guess i'll have to go to pick-n-pull to see how an untouched ea82's spfi is wired up. i don't always have this much trouble figuring things out but i don't know the functions of each terminal/wire on the relays.

 

 

Look at the side of the relay. It has a diagrahm right on it that shows which pins are which. Also Do you have the FSM wiring diagrahm?

Look at the side of the relay. It has a diagrahm right on it that shows which pins are which. Also Do you have the FSM wiring diagrahm?

 

Most of the applicable diagrams are in the downloads section of my converson site.

 

I haven't looked real close because I don't have time right now, but I didn't follow your diagrams right off - what exactly is the problem you are having? There isn't much to the power wiring.... is your problem with locating the proper wires in the coversion harness, or in where you should connect them to the car?

 

By the sounds of it, you didn't completely strip out the SPFI harness from the donor wiring. You should - it's much more difficult to follow if you still have it wrapped up in the factory tape and conduit.

 

GD