2004 Jeep Grand Cherokee relay

For all those who know. I'm trying to install a DEI 561t in a 2004 Jeep Grand Cherokee. The wiring diagram reads....

Parking Lights - yellow = headlight switch

Notes: Parking lights require a negative trigger thru a 1300-ohm resistor. There is a rest resistance on the wire, so you MUST use a relay.

So my question is should the relay be wired up like this:

86 = (- from 561t), 85 = (+ fused), 30 = (ground and 1300 ohm resistor) 87 = (yellow from parking lights), 87a = (not used)

Also does anyone know where I would find the lock motor wires and their color? The 561t will be used with the factory keyless so I need to get a (-) or (+) from the lock motor unless you guys know a better way. Thanks.

The relay wiring you posted will work fine for the lights.

As far as doorlocks on that vehicle...If an interface module is not available, use ORANGE / black and pink/black at the driver door lock switch in the door to lock and unlock the driver door. Use ORANGE / purple and pink/purple at the passenger door lock switch in the door to lock and unlock all of the other doors. These wires are reverse polarity (5wi).

So basically it's quicker to use a module but it can be done with relays as well. No other shortcuts that I know of on these.

Out of the dozens of Cherokee's i've done i have never used a relay on the yellow light wire and have never had a problem. I wish i could remember the value, but it is different when not using one. I simply grab my pack of relays and ground the yellow thru each relay until i hit the one that makes just the parking lights come on(the headlights come on with the wrong values). It never takes me more than a minute to find the right one. Next time i will write the value down so i remember. Still, it's quicker than wiring a relay up.

As for motor leg wires, you can get the lock wire in the boot at the rear left door. Set the RS to activate after 2 pulses and use this wire. When using the factory remote, the first press only does drivers door and won't send a signal, but the next two will and will start the car. This trick is much easier than going in the drivers door for the motor leg there...

Agreed with Mike m2. If you experiment with resistor values you can do the lights without relays..as a matter of fact I use the same procedure with 1 wire doorlocks and have sucessful results.

And using the leg of a doorlock motor will definalty work for the remote start pulse's.

im pretty sure that the relay wiring you have is not the correct way to activate the parking lights.....what they mean in this case by there is a rest resistance on the wire is and you must use a relay is

85 (+ fused) 86 (- parking light output from rs) 30 (light side of yellow wire) 87a (switch side of yellow wire) 87 (ground with 1300 ohm resistor in line)

the parking lights will operate properly the way you have hooked them up (dont get me wrong i do it all the time in those toilets) but when they say to isolate the parking light feed from the rs from the parking light wire at the switch...this is what they are referring to.

please dont bash me

Don't worry snotdobbs, I won't bash you at all. And have no reason because your reply makes sense and your relay wiring is on the money. Here is what I got off directed ....

The parking lights are negative trigger thru a 1300 ohm resistor. There is a rest resistance on the wire, so MUST use a relay to isolate away from the switch.

It's odd because I am sure I have done these before but don't recall this procedure. I bet someone showed me another way to do it but I forgot. Or perhaps I just used the resistor alone and it worked so I ignored the note..oh well, learn something new every day it seems.

snotdobbs wrote:

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oh yeah when i dont use a relay for the parking lights in that truck its a 1k ohm resistor......works everytime

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What wattage do you use? I when't to get some resistors and wasn't sure what to get. Thanks.

Mike M2 wrote:

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As for motor leg wires, you can get the lock wire in the boot at the rear left door. Set the RS to activate after 2 pulses and use this wire. When using the factory remote, the first press only does drivers door and won't send a signal, but the next two will and will start the car. This trick is much easier than going in the drivers door for the motor leg there...

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If there is a motor leg wire in the drivers door wouldn't it also be in the drivers kick panel? Thanks.

snotdobbs wrote:

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oh yeah when i dont use a relay for the parking lights in that truck its a 1k ohm resistor......works everytime

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What wattage do you use? I when't to get some resistors and wasn't sure what to get. Thanks.

In this case the wattage rating is not really a concern. Any standard 1/4watt or greater resistor will suffice.

The purpose of the relay is for isolation. Current draw is a non issue in this case and therefore neither is wattage. The resistor is used to send a lower voltage signal to the factory module to activate the lights... the actual current of the lights is not drawn through it.

jasondavis05 wrote:

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Mike M2 wrote:

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As for motor leg wires, you can get the lock wire in the boot at the rear left door. Set the RS to activate after 2 pulses and use this wire. When using the factory remote, the first press only does drivers door and won't send a signal, but the next two will and will start the car. This trick is much easier than going in the drivers door for the motor leg there...

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If there is a motor leg wire in the drivers door wouldn't it also be in the drivers kick panel? Thanks.

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No they don't. This car has DCM's, or door control modules. The BCM sends just data to these DCM's and they decode it right in the door. The lock relays are in this module right in the door, thus no motor legs are present outside the door.

Mike M2 wrote:

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As for motor leg wires, you can get the lock wire in the boot at the rear left door. Set the RS to activate after 2 pulses and use this wire. When using the factory remote, the first press only does drivers door and won't send a signal, but the next two will and will start the car. This trick is much easier than going in the drivers door for the motor leg there...

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Do you mean the driver or passenger door? Sorry I'm not sure if your setting in the car or looking at it from the front. Thanks.

As a rule of thumb "left" always means the drivers side.

Good Luck