1986 Foxbody 2.3 Liter hatchback

All, looking for a little help identifying this resistor, it is on the passenger side firewall. The wire is very dirty, its green where the wire is in good condition, the housing is burnt I would like to replace it but I can't find the part. Any help would be appreciated, Part number, what it goes too? It's my Son's car I don't want to tear the loom apart untill the weather warms up.