AP50 Cruise Control wiring

go into super cheap and look at the wiring diagram of new one in box.
Graham

Michael, I have the AP50 cruise control instructions in front of me.
The clutch switch appears to be wired in series with the brake switch.
In particular, it says:
The two wires of the reed (clutch) switch need to be connected to ONE of the two brown brake wires of the cruise control wiring harness. Cut ONE of these two brown wires and connect the clutch switch in series.

On the main wiring diagram its shown this way:
brown/white wire to clutch switch - other switch terminal connected to brake switch (the one that has the brake light connected). Brown wire to brake switch (the one that has +12v on it).

I hope that helps.

Klaus

Tried contacting Command themselves ?

I found them absolutely brilliant, in the past.
Had one fitted to my Navara, ( brought new in sep 2003 ) and it has never missed a beat,,,, SO FAR !

Here is the original phone no. 02 9316 5033

Dunno if it's still active but they were Gr8 to me.

Cheers Mate
Bucky

The AP50 needs the brown and brown/white to be at opposite voltages to enable cruise. That is, one at 12V (or 'open'/disconnected) and one at 0V (grounded). Doesn't matter which one.

If BOTH wires are at 12V or BOTH grounded, cruise is disabled.

So, with just a brake switch (e.g. in an auto), when the brake pedal is out, the brake lamp switch is open and one wire is at 12V and the other (via the lamp circuits) is at 0V. When the brake pedal is pushed, the lamp switch closes and both wires are at 12V - and cruise is disabled.

On a manual, a switch (which is closed when the clutch pedal is out) is put in series with the brake-lamp-side wire. When the clutch pedal is pushed, this switch opens. So (this wire which is normally grounded via the brake lamps) is now 'open' (floating) and will be pulled up to 12V via a 'pull-up resistor' inside the unit. Both inputs to the unit are now at 12V again and cruise is disabled.

Hope I've managed to explain this adequately. [By the way, you can use a normal brake lamp switch on the clutch if you wire it via a change-over relay to 'invert' the switching. PM me if anyone needs a circuit diagram.]

Thankyou all very much. I have tried Command but I really need to get this fixed this weekend and no-one home at Command. I should be able to nut it all out with the info provided by you. Thanks particularly to Ian and Klaus. This time I will try to tie it all up so the Cruise Control doesn't become part of the steering!
Michael