I need a wiring diagram for a 1999 Jeep Grand Cherokee
The stereo was taken from the vehicle, at which point all heat and air controls were pulled out. Since vehicle is going to be used as a rock-crawler, I would like to run heat and air from switches etc.. I need a Wiring Diagram Showing which wires are for the heat and air conditioning.
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Re: I need a wiring diagram for a 1999 Jeep Grand...
Here is the stereo wires which may help you figure out which are not the ac wires etc. hope this helps with some of the problem.
6" x 9" Doors
Left Front (+)
Left Front (-)
Right Front (+)
Right Front (-)
6 1/2" Rear Door
Left Rear (+)
Left Rear (-)
Right Rear (+)
Right Rear (-)
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You must remove the instrument panel and the A/C-heater housing to replace a heater core on a Jeep Cherokee.
I would be happy to provide complete instructions as well as diagrams if yu would like to take tis project on yourself.
Just click on my profile picture below and go to my FixYa profile page. Click the tab that says "Pro Services". When the page opens up, click any of the services listed. (It doesn't really matter which one - they will ALL connect you with me) Sign up for Email support. Be sure to include the Year, Make, Model, Engine Size, and a brief description of what we are trying to fix in your message (just so I don't mix you up with someone else). Youi can also do this by clicking any of my ads that you may see on FixYa.
Be sure to mention WHICH 1999 Cherokee you have...Cherokee Laredo, Grand Cherokee, Grand Cherokee Limited, etc. I would also need to know if you have MANUAL heating and air conditioning or if your vehicle is equipped with AUTOMATIC climate control.
most are controlled by vaccuum lines, check your lines running from your engine thru your firewall, and make sure that you have vacuum at the line where it passes thru, if you dont, you have a line off or burnt in two in the engine compartment, if you have vacuum there, check where it connects into your heater controll underneath the dash, i've had them pull loose when installing stereos or doing other things under the dash,
does the air blows only on the windshield? if so there is a sensor located inside your dash board that need to be replace. Go to MSN.Auto and type in your vehicle under used cars and check the reliabilty it will tell you this and more.
you should be able to find out what that fuse is by looking under the cover for those fuses. you should see a diagram with explanation for what each fuse is for. or look in your owners manual. or buy a chilton repair manual from a parts store. good luck.
The lower speeds are controlled by a resistor block. That's what needs to be replace. It's usually located next to the blower. It will have electrical wires connected to it. High speed bypasses the block so it alway works.
If you want to replace it then;
) Disconnect the battery negative terminalif the vehicle have air bags. Wait 2 minutes for system to discharge.
) Remove the kick block on the passenger side.
)Remve the glove box
) Remove the bolts holding the blower motor resistor. Push the red lock up and press down on the click
) Pull the block out.
) Install new block and reverse steps above.