May not be the radiator. Or even radiator related.

Check your fuse block (especially the connectors on the back side). If
you added fog lights or something similar to the system, you may be
using oxidized connectors that are now overheating.

You alternatively may have incipient need of a headlight switch (one of
its failure modes is to melt).
Put your nose to it and sniff. It will be pretty obvious if that is the
case.

On Aug 29, 2004, at 10:47 PM, Jim Heissenbuttel wrote:

> Anyone else ever have a burning plastic smell in the cabin when the
> radiator fan is on? It doesn't seem to be an issue when the radiator
> fan is not running, so I checked the connections there and I cannot see
> any problems. Anyone ever experience this?
>
> jh
>
> 83.5 WBX Westy