do you sell a conversion kit for an Enerspacher D5LC diesel heater that doesn't require new wiring and a new controller?

Can you please confirm exactly which Eberspacher D5 heater you currently have?

is it the earlier generation D5LC

or

The later generation D5 Airtronic?

Yes, we have a simpler upgrade conversion kit for D5 Airtronic, all good, where you can re-use existing wiring harness - but there is no possibility of an upgrade conversion kit that utilises the old wiring harness for the very early generation D5LC Eberspacher heater unfortunately.

If you are unsure of your heater model, please email photo of heater dataplate to sales@butlertechnik.com