VFRegal

I've got a copy of the r34 service manual. has a fair bit of electrics but it is spread out. Would that help ? So those 2 plugs near the headlight won't be a direct plug in situation ? Thanks,

Thanks Mitch, We'll get the 25 harness out on sat and have a look. I stripped the 26 harness down and found about 14 wires which will need to be cut and spliced into the 25 harness. What would be handy is the pin outs for the 2 main plugs that are up in front of the strut tower. Would be nice to know if I can just plug the 26 harness directly in or not, rather than having to chase all the wires down and find out where they go.

It's an R32 RB26. Standard ECU. Problem with just "wiring in the pin outs" is that the harness contains wires not related to the ECU. It's pretty hard to just drop the other harness in and leave it loose as there is only enough room for one harness through the firewall. I think the best approach is to remove both harnesses, split and combine. Would be nice to get a proper harness drawing and not just a pin out drawing. Has anyone seen something like that ? Mitch, can you do away with the R34 ecu completely once the R32 ecu is installed or does that contain any non engine info like abs, bcm type stuff ?

just pull it forward a bit and she'll be right

Thanks everyone, much appreciated.

Thanks guys, Is there somewhere online that you can get the electrical schematics ?

Hey, helping a mate do an engine conversion in an R34 GT-FOUR. Initially thinking of an RB26 or RB30/26 swap but the big concern is the level and complexity of the re-wiring that might need to be done to get the 26 loom spliced into the 34's existing loom. We want to have the car off the road for the minimum amount of time possible. So queries are: · Would we be better off ripping the 25 loom out and replacing with the 26 loom? · Can we somehow use a mixture of the 25 and 26 looms? · Or should we instead go with an RB25 or RB30/25 so that the wiring should be easier? On that note, is there a huge amount of difference in the wiring looms between the 34gtt and the 34 GT-FOUR (i.e. non-turbo)? Cheers, Peter