Doing my wiring this weekend, the weather gods have given me some nice temperatures to work with plus a 3 day weekend
First off, my harness and motor are RB20 from an A31 cefiro. I've read through just about every wiring post I can find plus using CarlH's and Skilzilla's wiring guides. With that in mind, I can't find the "6 wire plug" on the RB ECU harness that matches the wire colors in Carl/Skilzilla's wiring guides.
I did find a 6 wire plug -- but the wires going to it are completely wrong (lt blue, green/red, green/black, lt green, orange, black).
Anyway, I traced the thick white/purple, thick black/red and thin white/black wires, they actually go to a 4 pin plug (along with a lt blue wire). I've never seen this mentioned before in anything I've read:
I DMM'd the black/red and white/purple wires, they hit the relays near the ECU so I assume these are correct. The white/black supplies power to the ECU on a couple pins, so I think this is correct also. The light blue wire hits pin 19 which is the PS pressure switch (who cares..). Has anyone used this harness before or have any notes on it? I already took care of the black/pink fuel pump relay wire.
1) Can someone please post up a picture of their RB 6 wire plug and the wire colors on it? Just for reference really, I haven't found a clear picture of it at all in everything I've read.
2) According to both wiring guides, there is a black/white and a white/red wire that get spliced into the KA/Chassis harness (into a black/yellow and white/red, respectively). I cannot find these wires in my RB harness anywhere: a black/white simply doesn't exist and the only white/red wire goes to pin #103 which is injector #1 (obviously not what we're splicing here). I believe I've read that these wires aren't needed on all swaps. My question is: what pin/function do the white/red and black/white wires have in Carl's wiring guide?
3) Where does the white/purple wire connect to under the fuse box? There's quite a few solid white wires of various gauges, if someone could throw up a picture or a few words I'd appreciate it. Not too concerned about this, probably figure it out with a little more research, but figured I'd add it onto this wiring post..
Thanks for the help, hope to have the engine fired up soon!
Modified by mello88 at 1:06 PM 5/25/2008
RB 6 Wire Connector? pic
Re: (mello88)
The 6 wire plug on the r32 harness has a 8 pin plug. The w/pu(power to ignition coil relay) and b/r(ignition switch signal on) look like the wires on your 4 wire plug. If the wire to the left of the b/r is w/b and traces to the eccs relay I'd say you have everything you need off that plug to make it run. The other wires on the r32 plug are g/or(neutral switch), lg(a/c relay), and sb(ps switch). I believe one wire wasn't used and one pin was blank. I've never wired a s13 so I can't tell you where they go but, that's what the do. Just make sure that pin 58 is run to a 12v constant and pin 59 is 12v switched.
Re: (jdmser)
Thanks for the reply, great info.
jdmser wrote:The 6 wire plug on the r32 harness has a 8 pin plug. The w/pu(power to ignition coil relay) and b/r(ignition switch signal on) look like the wires on your 4 wire plug. If the wire to the left of the b/r is w/b and traces to the eccs relay I'd say you have everything you need off that plug to make it run. The other wires on the r32 plug are g/or(neutral switch), lg(a/c relay), and sb(ps switch). I believe one wire wasn't used and one pin was blank. I've never wired a s13 so I can't tell you where they go but, that's what the do. Just make sure that pin 58 is run to a 12v constant and pin 59 is 12v switched.