maybe consider a voltage divider, which will just ratio the input voltage which is a variable one (or possibly pwm) into the range which the apexi can see..
http://www.raltron.com/cust/tools/voltage_divider.asp
R1=1000ohm
R2=714ohm
you are not after a dc-dc regulator, just to ratio down the over voltage out of the abs ecu to the apexi
do i have to make this up myself bill or can i buy one
