The relay.
I think 24 volt 200 amp continuous service.
I bought a replacement from NAPA. They may not have it on the shelf, but they will have it in the warehouse and available to you in 24 hours or so. I think with tax and tags, near $80.00
Search this form. There is a thread that list the Prevost part number for the relay and a cross reference to a Prestolite(?) number.
PM to Chalupka. I think he found a source on ebay for $12.00 plus shipping.
Hint. Even if you think you turned everything off, use electrical tape to cover all the lugs in the area where you are working when you do the replacement. Else you make a small problem worse and ruin a good wrench or two in the process, not to mention all the other breakers and fuses that go in the circuit you accidentally make alive and overloaded.
These guys
http://http://www.texasindustrialele...com/relays.asp
have this and many others. (I did not check the prestolite number)
15-141
SAS-4401
Your Cost
$53.50
AMETEK 24 Volt DC Universal Applications
Power Up Relays,Pump Motors ,High Current Utility Vehicles, Winches, Lift Trucks,
Snow Plows etc.
Insulated Ground Circuit
Normally Open Circuitry SPST
Contacts : Silver
Voltage Rating 24V DC
Terminals copper; 10-32 thread
and 5/16"-24 thread.
Continuous Rating 200 Amp
Can be used to in place of Prestolite
15-141, 15-196, 15-310,
SAS-4401, SAS-4408, SAS-5401
On edit: Try this link for the thread.
http://forum.prevostownersgroup.com/...ght=prestolite