Brown is the main relay, the big black one on the inside is the blower relay. Grey is one of many a/c relays (for pressure switch). Black one next to that is for rear defog. That's all I have on my 2.8, plus what's in the fuse box and under the dash, behind the glovebox, etc. Also there's a starter relay below the receiver/dryer.

My relay panel looks like RubyTrooper's FWIW, with factory air and no cruise.

Did you even ask about this or am I answering a non-question smile

2000 Mitsubishi Montero Endeavor, "Katsumi", 138k
1993 Toyota Tercel, backup vehicle, 93k
1989 Isuzu Trooper, "Beniko", R.I.P. at 233k

My 'Genuine Isuzu Parts' decals - for sale