Other Homework Help

My ’99 Blazer is eating up fuel relays like there is no tomorrow. Opened one and seems to be too much current   as they heat up in very short time almost too hot to handle. Burn outs come after stopping (if they lasted that long) and while driving. Replacements with new relay fix problem but for short time only. Burn outs were long term before. Replaced fuel pump over year ago and had to make new connections for hook ups. Everything seemed fine and worked fine. I re made connections but seem to still have problem.  Took fuse block apart under hood and find no questionable spots. Anyone out there have help?