Depends if you are in really cold weather or not. And if you do make sure it is a push button as after 8 seconds of 12v you will melt the plugs. Should only take a few seconds of glow to start or you have other issues. If you are in a really cold area I would fix the original system as the dropping resistor method keeps 3-4 volts too plugs till about 30 seconds to a min after she starts to help smoothen out idle. Plus the original system has a fuel heater on the filter housing. Also if you do go with a button just disconnect the wiring as opposed to hacking it up so if the next owner wants to fix it he can! I stay away from trucks with a hacked up harness