86' Bronco II fuel pump relays??

I have an 86' 2.9 liter fuel injected V6...we can straight wire the relay and they come on but we cant get fuel pump relays to work. It has 2 fuel pumps and one is just a booster and is sposed to cut off after 10 seconds.. but if u straight wire it they both stay on which isnt good. We have tried new relays and we've even tracked down sum original relays and none of them work. Wut do we do? Ive heard this is a common problem? please help!:banghead:

I have an 88 Bronco with the the same problem if you find out anything please let me know when i wire direct it burns up the pump within 300 miles have gong thru 5 pumps this year