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---Ed McKinley wrote:

Ron Bloomquist and I used a Subaru wiring diagram to be sure the
wires
went where they're supposed to. I would be very nervous right now

if

I hadn't had the diagram.

Ed;

Are you referring to the wiring diagram in the Chilton's Subaru
Repair
Manual or did you get one from Subaru (or elsewhere).

Warren Chapman

Ed and I used mine which was printed out from a Mitchell Repair Computer
CD-ROM at my local garage.

We typed in the type of car, the year and model and then asked for the
wiring schematic. Boom! Cool!

The two pages printed out were:
Wiring Diagrams
Fig 2: Computer Engine Control (Grid 4-7) and
Fig 3: Computer Engine Control (Cont), Ign Coil (Grid 8-11)

Mitchell CD-ROM- Chilton Manual? Probably the same schematic actually.

Either one really helps if you are comfortable following little black lines
around on a schematic. In my case I had to remove my glasses and press my
nose against the page. <grin>

Hope this helps.

Ron Bloomquist

I got a copy from a garage that has an on-line service for downloading wiring diagrams.? I went to a local (small) Subaru dealer first to try to get a copy out of a shop manual.? They had just about every other subaru made except my model. They were willing to make copies for me.

I used the diagram to help make sense of the rat's nest in front of me. I traced wires to be sure they all went where they should and to help the eliminate unneeded splices in the suabru harness. I left the ground wires for last because they had the most spagetti dangling off them.?? The power and ground wires get tricky because they serve multiple connections.

When I believed my harness was complete I used another copy of the diagram and marked each line from begining to end with a highlighter as I traced and continuity tested each one individually. I used separate colors for the four grounding circuits, one color for all computer wires, and another color for un-needed wires (a/t, abs, a/c, etc.).? I have an office with lots of colored highlighters - one or two colors would be sufficient.? After all the above were completed I found several uncolored lines representing wires that go from one connector to another without passing through the computer.?? When this procedure was completed all wires on the diagram were accounted for.

There are some wires in the harness that were not on my diagram because it is for the engine only.? These included the alternator wires and others. There was also one, or two, ground wires not connected to a anything.? As I said earlier I connected these remainders (I believe it was only one wire) to wires I spliced into the other engine grounds connected to the Subaru engine ground plug? (four groups of two each). I stagger spliced this group so that there were no unwieldy splices of more than about four wires (tried to keep it to three) and yet only two wires looking for a connection to the engine when I do the install.? Likely a waste of time to add the redundancy but I needed to ground the remaining single wire and I didn't want the fun to be over just yet. Now my harness agrees with both Hobert and Subaru for grounding.

Any time I spliced a group of hot or ground wires to a single wire heading to the power? or ground source I used one size larger wire, probably another redundancy.? As Hobert recommends, in no instance did I use a smaller wire than any within a group that were spliced together.??

Another tip:?? Make sure that your soldering iron gets the wire hot enough to draw the solder into the wires instead of melting it over them.? I paid close attention to each splice making sure the solder was pulled in.? This is similar to sweat soldering copper pipe, where you heat the pipe joints until the solder is sucked completely into the joint.? Heat the wire first then apply the solder (in the case of pipes: cleaned with sandpaperor emery cloth and fluxed prior to solder).? Also goes without saying, use rosin core solder.

This is kinda fun writing it out after the fact.? Hope it is helpful.

Warren Chapman wrote: