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Hey guys been chasing the reason the ps has been heavy for a while and its just occured to me that its a non hicas motor and loom and the car was originally hicas so the solenoid on the rack is unpluged caz there is no plug to plug it in, can I tap into the hicas ecu and wire it up to fix the steering or is there another way around or thing to do ?

If you want it to work properly, then yes, you need to put in wiring equivalent to the original HICAS wires in the old loom. There is a way to bodge it so that you have feather light steering all the time (which is just to give 12v and earth to the solenoid all the time) but that's a bit shit, and I wouldn't do it.

You're going to need the wiring diagram for your car to be able to pick up where the HICAS wiring is currently finishing up in the engine bay. I'd say it's hanging about somewhere near the fusebox, but could be wrong.

It definitely comes from the HICAS computer, but the point is that the wiring that comes from the HICAS box to the front of the car will still be there. You just need to pick it up at whatever loom/body plug it ends at and carry it on to where it goes. Hence why the wiring diagram would be useful.......

  • 3 months later...

well, if anyone is still interested. there's a pink wire that goes to the nolex type or white plug that sits between the fuse box and the washer bottle, that's the switched supply from the hicas module. then the grey connector above it has a straight black one that's the earth in the original loom.

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