4x4 light flashing
Also have a blinking 4X4 light 99 Amigo. Have checked all the vac lines and everything seems to be fine. Replaced the 4x4 sol on the drivers side firewall and it does not appear to give vac on the 4x4 (gray connector) when button is pushed. When the vac lines are swapped the 4x4 does engage when the button is pushed but still blinks. I do get voltage to both the gray and the blue on the sol. It just appears that the button is not closing the blue and opening the gray sol when pushed. The blue always has constant suction.
I did just find the Diff switch wires on the front axle were rotted and not connected. I ordered a new one but i do not think it is causing the issue from what I have read in other threads. Just for the hell of it i removed the 4x4 control under the center rest and inspected it for shorts and it looks ok.