What is this wire?

For DC circuits Red is positive and Black or White is negative

Also the standard wire colors for DC circuits is blackis positive and white is negative or ground

diesel man 03 wrote:
That is a fuse of some sort.I would not bypass it.

do you mean I'm doing wrong by putting pennies in the fuse sockets at home?
bumpy

Radio Shank has a good choice of them

That is a fuse of some sort.I would not bypass it.

Yep; that is exactly wrong. I lifted it verbatim from a dryer repair website, hence the quotes. My bad.
The point, though, is that testing for continuity would answer the question, and thermal fuses are cheap.

samandtheduck wrote:
Doesn't an infinity resistance reading across a fuse indicate an open or blown fuse?

Correct. If it reads infinity it is open, hence no current flow. A good fuse should read at or near zero ohms. I suspect SailingOn just misspoke.

SailingOn wrote:

"Some repair shops advocate bypassing the thermal fuse by adding a jumper wire. While this method does determine whether the fuse is bad, it is too easy to forget to remove the jumper and replace the thermal fuse. Instead, remove the wire leads from the thermal fuse and set a multitester to its lowest RX setting. Touch the tester’s probes to each terminal on the fuse. A reading of infinity indicates the thermal fuse is good. Any other reading means the fuse has triggered and must be replaced."

Doesn't an infinity resistance reading across a fuse indicate an open or blown fuse?

That is what went on mine, just bypassed it, and eventually sold the unit, newer unit failed too, but on it I bought a whole new fan motor assy, kept the old one and got a noisy motor from a guy at work that still has a good fuse, so will use it to make my old one good again for a spare.

Put a jumper wire across the fuse to check it.