Even further research has led me to a DSC ....Dynamic Stability Control. All 2015 model Defenders should be equipped with it......That's the switch that I need Thanks

I've done some more research and found out that the roof sensor may be an alarm sensor and the supposed yaw rate sensor may be an ESP sensor. These two make more sense for a 2015 defender 130

Oh wow....i'm reading your response over and over and i might be convinced that the 130 crew cab i bought from foley's is equipped with this roof sensor. There is a space size about 2" x 2 &1/2" right side rear of the cabin that I have been told is for a sensor. So here it is. 130 chassis from...

HI sorry just saw the question. I hope by now you've figured it out. Anyway I had to buy a main loom with ac configuration-not expensive about 200 quid

I'm trying to figure out if I need to have any dash switches to correspond to this sensor. I figured that it was something I would turn off or on. If not then what happens if my truck sways left to right? Does this sensor correct and stabilizes the truck and by what measure?....thanks for all...

Does it have anything to do with Hill Descend and do i need to purchase a dash switch for it?

Anyone knows the ins and out of the yaw rate sensor? I'm building a 130 from bottom up and so i bought an ECU kit that it came in. Will i need to get a Hill Descent Switch?

Hi have you fitted your ac? I am now fitting ac into my HCPU. However my truck dash and engine came ac ready but my loom is from a truck that did not have ac....not sure how to run wires thanks

Pix of the build

This is a pic of the loom fitting 1 socket but the other sockets are considerably larger

Here is a pic of the ECU. There are 2 larger sockets and 1 regular sized socket. My current loom doesn't fit all 3 sockets

I agree keeping the loom and modifying it to work with the ECU might be best but it would mean a purchase of the original loom to the ECU The ECU, clocks, and keys/transponder were bought together and should all work fine with the engine.....for me to adjust the loom would mean the purchase of...

Here it is, I've always been good at getting into things I have no idea about and figuring them. Well I decided to build a 130 from ground up. Richards chassis, check, TDCI XS bulkhead, check, fuel tank and lines from breaker check, entire drive train from breaker-axle, props, puma engine and...

Don't know what it is at all but I suspect that it is related to the crank bolt since this is the only bolt not torque to spec.

It does this in motion....although I'm not moving very fast