Acc power wiring

L

levi11

NAXJA Forum User

Location

california

• Jun 22, 2013

• #1

I have a 2000 cherokee with a Dirtbound fan kit. Right now the fans run after I turn the jeep off until the jeep cools off. Where is the best place to run power so the fans turn off with the ignition? I tried the fuse box under the hood but I think power goes to the whole box. Any info would be appreciated. Thanks

 

S

SuperRA

NAXJA Forum User

Location

Santa Clara, CA

• Jun 22, 2013

• #2

I believe you are supposed to run the feed to the controller (temp sensor if you purchased that option) from a ignition switched source. That way the relays are only powered if the ignition is on AND the temp is too high.
Look at the last picture on this page, it shows how the fans should be wired.
http://www.dirtboundoffroad.com/featured/xj-–-electric-fan-conversion-kit/
When done that way, the fans should turn off with the ignition.

 

Tim_MN

Freakish Hand Strength

NAXJA Member

Location

Minneapolis, MN

• Jun 22, 2013

• #3

levi11 said:

...... 2000 cherokee with a Dirtbound fan kit. Right now the fans run after I turn the jeep off until the jeep cools off.

Click to expand...

This is a good feature to have and use.

Otherwise, use your $6-18 Volts/Ohms multi-meter that you purchased at the Hardware Store, Home Improvement Store, Fry's, or WalMart type store and probe for a switched 12+ volt source yourself.

 

W

WB9YZU

NAXJA Forum User

Location

Madison, WI

• Jun 22, 2013

• #4

You'll probably have to look to the inside fuse block for Accy Power.
HF has insanely inexpensive VOMs to the point where you just leave one in the Jeep. Look for sources that switch on with the Key either in the ON or ACCY positions.

What you have now isn't that bad, but I can see wanting to go though a switches source for safety reasons. You never know when that fan is going to run if it's just hooked direct.

 

scoobyxj

NAXJA Forum User

NAXJA Member

Location

Coshocton, OH

• Jun 23, 2013

• #5

The + side of the OEM fan relay coil is a switched source.


IIRC the ADS, and antilock brake + side of the coil is too.

 

W

WB9YZU

NAXJA Forum User

Location

Madison, WI

• Jun 23, 2013

• #6

Those are good! I didn't think of those.

 

scoobyxj

NAXJA Forum User

NAXJA Member

Location

Coshocton, OH

• Jun 23, 2013

• #7

The sucky part is that they're RUN/START sources, and not RUN only. I don't believe there is a RUN only source under the hood. Maybe at the ECM?..........