so im converting a obd-0 88 HF engine harness to work on a 91 b18 (obd-1) the problem im running into is this. IM one plug short!! i have all the plugs accounted for, moved the fan switch wires, changed the injector plugs, removed the resistor box, adapted the distributor, everything.

on the b18 there is one little 2 wire "snap" plug on the back of the block next to the oil filter, it looks like it goes into the water jacket. at first i thought it was the thermo switch, but i already have two plugs that are coolant related(thermo switch, and temp gauge i believe). so whats this last plug?

if anyone has done this conversion before did you have any spare plugs or anything like that? this is the last thing i need to solve before i put her in the crx.

thanks a bunch!

 

im really regretting not buying a 90 b18. lol im an idiot

 

that greenplug on the back is not used

 

why are you regretting not getting a 90 ls? to my knowledge the 90 and 91 ls's are the same

 

a 91 ls is obd0
the hf harness will have an extra plug for the EGR sensor that the ls motor doesnt have
all the other plugs should match up

 

ooops i meant 92. i wated a 91, but ended up with an obd1 92 b18. oh well, when all is said and done ill be happier with the obd1

thanks for the help