IIRC They are bog standard car relays. Look on them forthe amperage rating. The biggest issue with them is that the connectors become loose, some gentle adjustmentfixes the prob
Or cut off the old barbed female spades and crimp new ones on.
They go in to a connector box iirc
If they are the same as the 2030 then yes they are in a metal box, in which the relays fix into plastic blocks and the wires are held in in the plastic relays block by way of being female spades with barbs. I bought two new relays thinking it was the problem but is was the female spades had lost their barbs and had dropped down. I tried to fix by pushing up but that never worked, so has to cut the old terminals off and then crimp new ones on. I am of course assuming we are talking about the starter and glow plug relays if not apologies and forget what I said.
