AFAIK, relay module ‘H’, DBC10009, has nothing to do with the cooling fans so its removal should have no effect on them. I assume that when you remove DBC10009 the radio, blowers, power seats and windows do NOT continue to run?
All of those above mentioned items do of course normally only become ‘live’ when the ignition key is turned to the ‘accessory’ position (I) which energises the relevant relay H1 in DBC10009 by putting it to ground through the ignition switch. Therein perhaps gives us a clue to the coolant fan problem.
The coolant fan(s) on the '93/'94 models are activated through relays in the fan control relay module, being energised by either of three switches.- the ‘radiator thermal switch’, the ‘single refrigeration pressure switch’ and/or the ‘triple refrigerant pressure switch’.
The only one of those switches which when activated energises the fan control relay by putting it to ground via the ignition switch at position (I) is the ‘single refrigerant pressure switch’. That occurs normally when the refrigerant pressure in the A/C system exceeds 218 psi which I believe ensures cooling fan operation to aid the A/C cooling effort.
None of that explains why the cooling fans continue to operate when you remove the ignition key but the clue is that the continued operation of those fans AND of the radio, blowers, power seats / mirrors etc would indicate that a) the wiring to or from the ignition switch at position (I) is still at ground when the key is removed (allowing the radio etc to continue to work) and b) there is also a fault in the single refrigerant pressure switch or its wiring which is causing the coolant fan relay to remain energised to allow the fans to continue running.
There is a White/brown wire from pin 3 of the 12-way connector on the lower right of the steering column which provides the ground link for all of the above when the key is in position (I). Since you have already changed the ignition switch itself, I would look for a snag in that wire which is perhaps shorting to ground somewhere and then check that wire at the single refrigerant pressure switch (2-way black connector on high pressure line) - item 12 in this picture -
Of course the problem may be MUCH simpler than that - but I’m not doing simple this evening!