You can keep the grids from coming on by putting a switch on the little positive wire that energizes the grid heater relay. There is one relay for each grid and I wired them together into one switch so that both grids always comes on, you can see that having both on drastically reduces the on/off cycle that it does after it starts. This will work for all years but I believe 1998+ cummins will bring up the check engine light (code fault). I made a better writeup on it here: http://forum.mopar1973man.com/showthread.php/1278-Switched-Grid-Heater
@jmanwild Mopar1973Man is the owner, I am an admin over there. He is like #2 on post count on CF so I am sure you have seen him around there.
ISXX 1 year ago
you have your own forum? i swear i've seen that name around cumminsforum at some point
jmanwild 1 year ago