Sorry stuif your wrong about renewing all electrics. You may have to renew alternator if you cant clean it, but a new alternator is a lot cheaper than replacing van. Before I retired I had a small international transport bussiness and I was going through Germany with a demonstrator truck pulling a trailor with very valuable load.I was flagged down by a motorist to find there were flames coming from under cab.An oil pipe from turbo was leaking oil onto exhaust and the insulation under cab floor was alight along with other plastic componants. I used the fire extingusher supplied with truck and put fire out. The engine was completly covered in powder and it was difficult to see anything for a few minutes. A heavy recovery truck came out and towed to DAF dealership. They replaced metal turbo pipe, plastic air intake pipe , renewed burnt out wiring and a few othe things, steam cleaned engine off and replaced air filter and I was on way again next day. I can assure you if that had been a CO2 type extingusher the whole truck ,trailor and load would have been a total loss
Bob