Found a couple of the trigger wires for the Grid Heater disconnected .I checked the Haynes Manual
and can't tell which colored trigger wire goes were
Could someone please enlighten me

 

If your talking about the solinoids it goes like this-there are 2 solinoids=Black with yellow stripe and black with pink stripe goes to the back of each solinoid,towards cab.-yellow with black stripe and orange with black stripe goes to front of each solinoid, towards front of truck, if your talking about the 2 heavey black wires on the grid heaters,it dont matter where they go.

 

Thanks thats exactly the info I needed .

 

Now what you should do is put an oil pressure sending unit single pole swicth on the oil filter housing,then run a wire from this switch to the back terminals on the solinoid,just unplug the blk with yellow stripe and the black with pink stripe and connect this wire to these 2 terminals,that way when you turn the key on the grid heaters will cycle and as soon as the engine starts and theres oil pressure the grid heaters will go off and never come on as long as the engine is running, as it is now the grid heaters will cycle themselves on and off till the temp is up or you go something lkie 25 mph. Once these Cummins Diesels are running there is no need for the grids to come on.Saves on alternator and batteries,been running my 2001 like this since new and it gets down to 40 below F plus in the winter.

 

This may be easier on the alternator and batteries, but it would be harder on the engine because it would take longer for the engine to warm up. The grid heater cycling while the engine is cold helps the engine come up to operating temp faster so that the engine can be running at optimum levels.

 

Dodge Demon I checked the wires when I got home, they weren't even close to being right My guess it happened when the dealership changed my vp-$$ back in the warranty days. This is maybe why the Optimas were cycling for so long during this past cool spell cause I plugged the two loose ones incorrectly . Thanks again!

 

The only reason for heaters is for starting,warms up the air a little so it will fire up faster,remember with no spark plugs in a diesels it relies on compression (and compression creates heat) to fire the fuel,once its running heaters have no bearing as to warming up the engine, just a waste of load on the alternator and batterys.You can start a diesel when its cold out with a little shot of ether,once its running you dont use no more. Most all diesels with the exception of the 5.9 Cummins,Duramax and powerstroke do not use heaters,if its cold enought so they wont fire they are all equiped with a ether button,give it a shot and your running.

 

The reason they cycle after start up is to control emissions.

 

Not that it matters but I dissagree.

 

Must be something new,,,,,,, When I ran heavy equipment years ago (955, 977, 816, graders and paddle-pans,,, most all Cats),,,, they all had pre-heat buttons. I may be wrong, but I would think that most diesels still use some kind of pre-heat process. I guess I'll do some research.

 

Read your owners manual

 

Most of the tracors have the pre-heat buttons and that is for ether. That is why they tell you not to use it over _ seconds. Just helps get those big engines started.

 

Exactly my point,they are NOT preheat buttons,when you press them they spray a little ether in the engine and it kicks right off.

 

The reason that the diesel trucks don't use these is because of the increased pressure that comes from using ether. If I remember right I heard that using ether will blow the intake off because it is aluminum and can't take the pressure.

 

the reason you don't want to use ether in our trucks is because the heater grids will ignite it before the engine can suck it in on the intake stroke causing it to blow up in the intake hoses and piping witch won't be able to handle that,it would be ugly.