rb 25 w/ r33 gauges. speedo wiring

[millerrb]

Hey guys. Have a 91 240 with a s2 rb25 . Car has the r33 gauges. bought the car all wired up and running already but the speedo isn't hooked up. Have the wires just taped up. Anyone know where they get wired up too, or can post a good wiring diagram. Thanks.

[millerrb]

Also my boost gauge isn't working cause I have a manual boost controller and the boost solenoid is gone. Anyone have one laying around the shop. Gauges that don't work bug me.

[millerrb]

Can anyone help me out here. I'm in the middle of fabing seat rails, ls2 coils, getting gauges working, and cleaning wires up under the hood and don't want to have to open the harness back up to hook 2 wires up. Please and thanks. If no one can please let me know so I can find other sources.

[mixeds14]

There's a write up in nico somewhere for r33 gauges into a s14.,maybe u can use the r33 part n the s13 fsm to wire urs up..

[placham]

What wires are u refferig to about speedo, wires on cluster are taped up? The way wires run >speedo>lower harness>engine bay by battery>interior of car plug by ecu>run up dash harness to middle vent area>cluster harness section 2 plugs about 2feet long section.usually plug for speedo needs to be modified and than actuall cluster short section for plug and play install. When I did my 180sx kouki cluster, converted s14speedo plug and speedo into trans, wired in my rb to 240sx wiring harness, and moded cluster short section to plug in kouki cluster, u would have to do the same for your cluster.
To use stock r33 boost gauge, u would have to find a MAP sensor or boost sensor that R33 uses, harness is not part of engine harness but body, so u would have to wire it in. Their 3 wire, ground, 12v+, 5v reference, U would run 5v ref signal back to cluster directly to gauge via connector. You would have to look on cluster printed circutry and determine which wires are for boost gauge, should be, Grd, 12v or Ign, and signal for gauge.

And isn't S2 rb25, same as rb20/26, just ignition, injectors, and vct is added, I'm not sure if they use solenoid for boost control, thought wg actuator controls boost, sounds aftermarket add ons but then again I haven't faffed around with 25s.