back up light switch location?

[KSommer]

hey all, i've owned a '91 dodge with the CTD fro most of the summer and still have not found the switch that turns on the reverse lights. any help would be apreciated.

anyone bypassed the computer on thier trucks? i already have a switch for O. D. , a button for the heat grid, and a non-functoning speedo, what else does the computer control?

thanks, kent

 

[Philip]

You didn't say what trans you have. If it is the auto it is located on the drivers side of the trans behind the shift linkage. It is a combo switch. It also is your netural safety switch.



If you have a gettrash it is located in the shift tower of the trans. I can't rmember which side.



You need to fill out a signature. Go to your user contral panel. The control panel is located in the discussion forums drop down. The click on edit profiles. Fill out the info for your truck. If you list the state you live. Most likely there is someone close that can help.

 

[KSommer]

it's an auto, and the neutral saftey feature still works. is the switch still bad? or can i get it to work?



i'll get right on that sig.

kent

 

[Philip]

My manual is for a 93 so I am not sure but it should be the same on wiring. There are three wires going into the trans switch. The yellow one is for neutral safety provision. The 18 gage WT is power to backup lights. The 18 gage VT/ BK is power out to backup lights. I think the VT/BK means violet with a black stripe. Put the trans in reverse with the engine off > ingnition key on. (Make sure to block the wheels to keep it from rolling). Then probe the violet wire to see if you have power on it. If you do go to the back of the truck and check the plug where the wires split off to the lights. It might be corrided up or damaged.



The PCM (power train control Module) controls >Heater relay #1, generator fields, heater relay #2, ignition feed, ASD relay (auto shutdown relay) , MIL (malfunction light on dash), Tach (which I don't think yours was wired for from the factory), vehicle speed sensor, ECT sensor ( I have no idea), water in fuel sensor, Air intake sensor, CKP pickup (crank position sensor), thermo switch (trans high temp switch) plus other items.



The items you have listed as bypassed doesn't mean that the computer is bad. There are sensors in each circuit that can go bad and stop the computer from sending the right signal for them to function.



Do you have a factory service manual?





Your truck is a 91. 5 model if it has the a OD trans in it. The early 91's only had the 727 3 spd auto. So on your sig for the truck. List it as a 91. 5. This will tell us that it is the later model config.