- Nov 25, 2020
- 86
- 36
- Funster No
- 78,117
- MH
- AT Dakota SE - Merc
- Exp
- Pretty much got the hang of it now!
Hi Wise ones.
I have a Thule drop-down Omnistep on my Merc based Autotrail Dakota SE 2003 vintage. The relay for it (and the 12v fridge supply relay) are cable tied to the heating duct inlet (nice bit of wiring design guys cheers!) under bonnet just above the battery. The step relay keeps burning out after a few months but just having looked at the wiring diagram for the replacement from Jacksons Leisure, it shows the relay is a 5-pin (based on a Ducato I suspect) whereas mine is just a 4-pin and the 5-pin wiring diagram shows a 2200 microfarrad capacitor across the 85 and 86 pins. My step relay has never had that fitted ever since I got the rig. I have ordered some capacitors so I can fit one as it seems essential. This would reduce any voltage surge and arcing etc which I think is destroying the relays and burning terminal 30 and melting the relay holder around pin 30.
Any ideas or advice most welcome.
Cheers
Paul
I have a Thule drop-down Omnistep on my Merc based Autotrail Dakota SE 2003 vintage. The relay for it (and the 12v fridge supply relay) are cable tied to the heating duct inlet (nice bit of wiring design guys cheers!) under bonnet just above the battery. The step relay keeps burning out after a few months but just having looked at the wiring diagram for the replacement from Jacksons Leisure, it shows the relay is a 5-pin (based on a Ducato I suspect) whereas mine is just a 4-pin and the 5-pin wiring diagram shows a 2200 microfarrad capacitor across the 85 and 86 pins. My step relay has never had that fitted ever since I got the rig. I have ordered some capacitors so I can fit one as it seems essential. This would reduce any voltage surge and arcing etc which I think is destroying the relays and burning terminal 30 and melting the relay holder around pin 30.
Any ideas or advice most welcome.
Cheers
Paul