Hi I'm a new member with an old troublesome Ducato!
It's a W reg 2.8 non turbo which has been converted into a horse box.
What I'm desperate for is any kind of wiring diagram to try and diagnose a non working rev counter. I'm having real trouble finding any info and I'm just fumbling around in the dark, any info much appreciated. Is a non working rev counter common, I've heard rumours about jump starting and booster packs frying something electrical??

Anyone out there know anything??

Thanks Keith (Buzz)