What is this and what does it do?

Cope said
On second thought can I just but 2 new relays from kragen? Smaller is better for me and this uses old glass fuses that are getting harder and harder to find.

What part number is the Tyco relay?

Thanks again for all the time and advice.

If you'e over 20 years old, you'll be able to get the glass fuses to rest of your life. ...they're not going away anytime soon. ....

Jeff