Roger,
You can do that if you want to, but diodes work better. You may still
get a spike on the line with the RC setup, but that won't matter to
anything but the electronics. The RC set does what it does by thying to
limit the rate of rise when the switch opens, but the diode makes the
power from the widing stay in the winding.

That is why little DIN (automotive default these days) relays are marked
87 for signal and 31 for ground.

Newer cars have a lot of this stuff going on.

Matt Colie

Roger Long wrote:
Nope. It was a dead short. I'm putting in the 10 ohm / .01 mfd
suppressors instead.