I want to convert my 98 civic EX to OBD1. The car is an automatic, all the harnesses ive seen only have 3 plugs, how would i get the 4th plug to work? Does the automatic plug simply go directly to the OBD1 ECU? Is it even possible? What is the best ECU to use? Thanks!

 

man stay with the obd2 or get the adepter cable from hondata

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Iceman05 &raquo;</TD></TR><TR><TD CLASS="quote">I want to convert my 98 civic EX to OBD1. </TD></TR></TABLE> Don't touch the harness... all you need to do is get a OBD II or OBD I conversion harness. A few companies make them. I personally have the Skunk 2 harness. Then just get your self a OBD I ECU. Don't worry about anything else. The OBD I ecu will just look for the sensors is supposed to ( i.e. the ones that came factory on the engine for that year. ) OBD II has more sensors , but that doesnt matter; it's not going to notice them.

CLIFFS: get a OBD I ECU for what ever engine you have and get a OBD II to I conversion harness. Plug the current ECU harness in to the adapter harness and the adapter harness in the the new ecu. Done.

 

yea, but my prob is i need a custom harness b/c the extra plug for the auto transaxle...