Quote
Originally posted by atomarc:
Bert,
All the sites I visited show a 10 amp fuse too. Things are a little more complex....someone snuck in a new motor and wiring!
Yeah I guess I should have indicated that up front sorry.

Quote
Is it only the high speed that kills the fuse?
Yes it was only on high that it blew the fuse.

Quote
If wire size was adequate, sticking a 15 amp fuse in would be a interesting experiment. If this fuse blew too, but after a longer period of time, you would definitely have to find the problem. If wire size was adequate for 15 amps, and this larger fuse solved the problem, you would have found your solution.
And so it was - 15 amp fuse and heater runs on high with no problems.
Must be as you suggested,that the motor they gave me was a different draw. perhaps it was one that fits the newer model trucks as well.
It was identical mounting and connection.

Thanks for all your help Stuart.
Now it is on to the horn...
I really want to get this thing registered soI can drive it!
Bert.

Bert
1964 Chev Suburban