[respectflly]

Hi all, i’m looking to add a 1991 4ws system to my 1990 Si, however from what research i’ve done already it seems a bit difficult. From what i understand it’s possible but requires some electrical work, any in depth tutorial i can follow? Thanks!

 

[Sam91]

There are some YouTube videos out there. And if you search on here there are some threads on here that have done the conversion.

 

[1funryd]

There is no electrical work at all. You are confusing our 4WS with the newer preludes which are electrical.
Our system is all mechanical. And the most reliable.
The system usually outlasts the car itself.

 

[luzer]

Sean's right, there is nothing electrical associated with this system. I've done this swap twice. It's very straight-forward. Just make sure you get all needed parts from the donor car. Here is the write-up I used the first time I did it. Note that not all needed parts are pictured, but they are mentioned in the write up.

2 Wheel Steering To 4 Wheel Steering Conversion