Thread: 2 x unattached wires at Auto - D2a

Without confirming with the wiring diagram, I expect them to be for the transfer case high temperature switch that's fitted to some vehicles. By connecting them together the transmission high temperature warning light on the RHS of the instrument cluster should be illuminated. Black with a coloured tracer is usually a sensor/switch return earth on these vehicles.

I fitted the omitted switch to mine.

Edit: Yep, just confirmed. Green/black provides the earth path for the transmisison oil temperature warning light.

yep transmission temp on v8's td5 didn't get it. guess they didnt think ppl would chip them to output like the v8

Thanks Graeme & Rosscoe. Very much appreciated. There's always a certain level of panic sets in when one finds loose unconnected wires in the car and you're not sure what they're for or where they are supposed to go !

So, the Auto transmission over-temperature sensor was never installed in the D2 TD5, but was in the V8 ... go figure !?

I'll check by shorting the 2x wires and confirm the temp light on the dash ... just for interest/knowledges sake.

Graeme, was there much effort / cost involved in sourcing & fitting the said omitted sensor ? ... and, for a std unchipped auto td5 is it really required ?? (I don't tow, but live at Stockton Beach, so there's going to be plenty of light/medium duty sand/beach driving in the disco's future ... nothing extreme)

Thanks again!

My MY99 Td5 definitely had the auto over temp. light connected as it came on more than once in hard sand work on hot days.

As said on one of the other posts is it the Transfer box high temp light that was not connected.

Or was it that the auto box O/T light was not connected on later models.
I will have to check my MY04 tomorrow,as i have never seen it on.

Thanks Paul ... there's no mention of a tr'f case over temp' light I can find in the owners manual ... Graeme mentions the dash light on the rhs of the instrument cluster ... I assume he means the auto over-temp' light (on the rhs).

Maybe it's just like the deisel fuel drain/water warning light isn't connected ... the sender's still screwed into the bottom of the filter, but there's no wiring ... but I think I've spied the end of the loom & plug tucked up under the chassis ... the later facelift models appear to have had some of the "features" disabled ... ?

Kev..


Yes, mine's a 2004 disco Classic td5 auto