Do you have the factory EWD?

[Nick M]

Why not? Besides the diagrams, there is circuit description for the EFI, so you have an idea on strategy.

http://www.ebay.com/itm/1990-Toyota...anuals_Literature&hash=item257079bb5c&vxp=mtr

http://www.ebay.com/itm/1991-Toyota...anuals_Literature&hash=item5d33514a71&vxp=mtr

http://www.ebay.com/itm/1992-Toyota...anuals_Literature&hash=item5d3365afb7&vxp=mtr