1992 E250 ABS/brake light trans shift hard

[Barnyrad]

I have a 1992 E250 Cargo van, it is an automatic. I started having several issues surface after I wired in trailer brakes. The issues that surfaced are ABS and brake light come on after driving for about 5 minutes. The brakes also get hotter than normal. The second issue that came up is the transmission shifts hard from first to second. The third is the radio now does not work all it has is static. I don't know if all of these issues are related to my trailer brake wiring job or not. But I disconnected the trailer brakes all the issues were still there. I have checked all fuses and they are all good. I suspect it could be some electrical issue but am not sure. Any one have any ideas of what could be going on.

Thanks
Dan

[E-250VAN]

Um. Try this...I have a 96 E-150. The ABS light came on whilest driveing home from
Utah. I know it sounds CRAZY, But it solved the problem. Check the tranny fluid!
Mabey they are linked in the computer somehow. I filled tranny, and no more ABS light