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65ZR1 · 09-11-2008

Im pretty sure the 90 is the year you can by-pass the switch and have full power all the time. No need to reprogram the computer for this. You just ground the full power wire from the ECM. Later years the computer looks for a make/break situation and grounding the wire doesnt work.

09-11-2008	#10
65ZR1 Join Date: May 2006 Location: Canada Posts: 139	Re: Then again... Im pretty sure the 90 is the year you can by-pass the switch and have full power all the time. No need to reprogram the computer for this. You just ground the full power wire from the ECM. Later years the computer looks for a make/break situation and grounding the wire doesnt work.