[tazzieman]

Originally Posted by 304065

I used to carry a spare DME relay. The spare was the known good one out of the car. The replacement was the one I installed. That accomplished two things:

1) Put a known good DME relay in the glove box; and
2) Familiarized me with how to change the DME relay so the first time I did it at the side of the road with trucks roaring by at 80 mph in a rainstorm while kneeling on roadkill, it didn't take very long.

My thoughts exactly! On my DMEd car (the 944) I found the relay was hard enough to get to on a nice sunny day , with no traffic thundering past & under no spousal pressure - figured it was best to put in a brand new one and keep the perfectly functioning old one in the glovebox. No reason for it to deteriorate if kept in a sealed bag.