I think the 84 still had it..1st have you new alt checked..can you drive it down to napa?They or most parts stores can check it at idle and under load for amprage..Or do you have a volt/amp meter to check output to see for sure..I guess If i read your sig I would have known that it was an 84..
That relay I think is on the driver side of that rig...I think..The only other time I had that problem with that realy was in an 82 and a 83..like I said..toyota wants over 100$new.. :yipes: