i removed the heaters from three of our 2006's on the first one i removed everything including the relay it set off the check engine light and code 541 as shown on smarty jr i measured the anp draw of the relay it was 0.8amp i found a 20 ohm 10 watt resistor and hooked it up to the two controll wires reset the codes with the smarty and no problems the next one i tried a 25 ohm and it set the code off i scrounged around and found a 16 ohm and a 15 ohm i installed them and no codes after that on any of them , the ecm must see near 0.8 amp draw to the small black wire with the yellow tracer when it calls for grid heat the best i can figure

 

all i have left hooked up is the relay with the two control wires and the power lead to the battery....everything else is gone

sounds like the guy above has it all figured out!!!

 

the two small controll wires you are speaking of are a trigger wire and a ground for the relay. the ecm detects voltage drop from somewhere else.

 

OK, I did this today. I installed a GDP airhorn & a Winspeed grid delete. I disconnected the thick black cable from the grid heater and also disconnected it from the battery. I did not notice any other wires. I started it to take it for a quick cruise this evening (52* F). No CEL light. Where are these other wires?

Thanx.