Can anyone tell me if the 1989 trucks had the ABS valve in the drivers side frame rail above the rear axle. I just ordered a S.S. brake line kit for my 93 but its based on a 1989 W250 I sure the axle lines are the same, but I got to thinking after I placed the order I'm not sure if the RWAL started that far back or not. Where the line comes out of this valve is the first place I can get anything apart without twisting it in a knot.

 

All the CTD powered trucks have RWAL. RWAL started in '89.

 

Thanks Dave I should be set then, now if I didn't have to wait 2-3 weeks for the line kit.