The car has a ford 2 wire valve, which is all wrong, not least of which because it says ford on it.
The ECU has a single PWM send from an aux out.
I have a few 3 wire bosh valves, and am keen to use one of them.
I have found out enough from my reading to see that the three wire valve uses a common + and switches earth to the push or pull side of the valve to get the correct setting.
I have also read that a resister can be put between the shut - and earth to keep the thing shut, and the single PWM feed from the ECU can be wired to the open side to pull against this.
Has any one had any experience with this type of mod or do i need to suck it and see???
I notice MS (glen's garage) has a 3 wire valve driver for their boards. I wonder how generic this is??