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Greg
Dodge Dakota
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7/03/2004
19:34:59
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 Subject: Got my electric fan on
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Message:
Well everyone I got my Flex-a-lite BM 150 electric fan on today. My dad and I installed it. I've noticed a mild improvement in acceleration and throttle response, nothing special though. It does cool the engine just as well as the old clutch fan does. Havent' driven it thoroughly yet so I couldn't really tell you. Each part of the installation had its ups and downs as well. Getting the stock clutch fan off was sort of easy after we figured out what we were doing and rented the fan clutch removal wrench from AutoZone. After getting it off we chose to use the clamp method for holding it against the radiator. This took some time and was rather frustrating. Getting those brackets to stay in the right spot was hard. Then we had to wire it. The directions were sort of straight forward on this part, and the hardest part was determining where to hook the wire coming from the + terminal on the control box and where to hook the wire coming from the "B" terminal of the control box. We ended up wiring the + terminal wire to an empty block inside the fuse box under the engine and the B wire directly to the battery. After hooking it all up and getting the temp adjusted on the control on the fan, we came to our last problem, which was where to put the coolant recovery reservoir. We ended up cutting the side of the stock fan shroud off where the coolant reservoir originally set in and bolted that up. Everything runs right now and looks great. The only problem I have now is after I shut the engine off, the fan will kick back on, or stay running if it was already on, cool the engine to the specified temp and then kick back off. Is this normal? I thought it might be doing this because we didn't wire the + terminal up to an ignition controlled source, but we tested the fuse block we used inside the fuse box under the hood (I turned the engine on and my dad tested each block for a spark, and when he found the right one, I turned the engine off and he tried again and it had no spark), so I really don't know. Any suggestions/comments on this issue? My truck is a 1994 Dodge Dakota 3.9L V6 by the way.
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jerryd
Dodge Dakota
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7/03/2004
20:38:02
| RE: Got my electric fan on
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Message:
Maybe you should run the wire to the fuse box inside the cabin of the truck?
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Greg
Dodge Dakota
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7/03/2004
21:18:30
| RE: Got my electric fan on
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Message:
Ok, someone please lead me in the right direction. I've searched for a while on this site and google and now know that I have to wire the wire coming from the + terminal to an "always on" 12v constant. My question is, where is there a 12v constant located inside the engine bay. I really don't want to run it to the fuse box inside my truck because I've heard bad things about the fuse box melting. Where should I hook this wire to?!
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another mark
Dodge Dakota
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7/03/2004
22:42:45
| RE: Got my electric fan on
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Message:
I put mine on the positive battery terminal. I also connected my
ignition source wire input to the ac clutch wire above the valve
cover that way it only runs when the truck is running. Good to
hear your thermostat actually works, I had bad luck with three
units.
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Greg
Dodge Dakota
JOIN HERE
7/03/2004
23:31:21
| RE: Got my electric fan on
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Message:
The BM 150 wiring instructions are very vague (at least they were to us).
MANDATORY CONNECTIONS
1. Disconnect the batter.
2. Connect the "+" terminal of the control box to a 12V positive (+) power source (i.e. fuse box), using the wire provided in the kit.
Note: Attach this wire to an ignition controlled source to stop the fan when the vehicle is shut off.
Note: Attach this wire to a non-ignition source to keep the fan running after the vehicle is shut off.
3. Connect the "B" terminal to a high amp 12V positive power source (i.e. battery, alternator) using the wire and in line fuse holder provided in the kit.
I have number 3 done correctly. Number 2 is the one that I need to run to an ignition controlled source. And I don't know of any inside the engine bay. I was thinking of just running it through the firewall and to the windshield wiper fuse or maybe to the a/c clutch wire like you said. The a/c clutch wire is the wire I've already crimped into though for the a/c relay. How would I tap into that wire anyways? What do you suggest?
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another mark
Dodge Dakota
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7/04/2004
02:59:17
| RE: Got my electric fan on
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Message:
just checked my wiring diagram and here is what i did
“+” terminal on fan gets power from fuse 20 upper connector in
passenger compartment fuse block which is unsued this is
ignition on only power
“G” terminal on fan goes to battery "-" terminal
“C” terminal on fan goes to a/c clutch fan connector
“B” terminal on fan goes tomini 25 amp fuse to the battery
positive terminal
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J and J Auto
GenII
7/04/2004
09:44:22
| RE: Got my electric fan on
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Message:
Either hook the 12v+ to a wire that goes on off
with key
Or run a master disconect switch into the cab
interupting the ground side of the relay not the
main fan ground to many amps on that
Larry
J&J Auto
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Greg
Dodge Dakota
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7/04/2004
15:22:12
| RE: Got my electric fan on
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Message:
Well we got it fixed today. I wrapped one end of some skinny black wire we had left over around the #11 fuse (windshield wipers I think) in the fuse box located under the steering column. Then I connected the other end of the black wire to some red power wire and ran it through the firewall to the other wire we had running from the + terminal on the control box. All is well.
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Tek
Dodge Dakota
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7/04/2004
17:32:49
| RE: Got my electric fan on
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Message:
Having an electric fan turn on after the engine is off is actually normal although I would have done what you did and set it up to only turn on with the truck on, this way your battery will not die on you.
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Tim
Dodge Dakota
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7/05/2004
02:53:06
| RE: Got my electric fan on
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BMW cars all have electric fans and they will stay on on turn on after the engine is off to cool the engine down. The electric fans use very little power and I wouldn't worry about your battery dying. I'd keep it the way you have it.
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GB2000
GenIII
7/05/2004
03:21:14
| RE: Got my electric fan on
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Message:
Kinda pointless to have your fan cool your engine when it's not running, dontcha think... my friend's Honda Accord is setup the same way. Quite annoying...
Josh
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another mark
Dodge Dakota
JOIN HERE
7/05/2004
14:42:06
| RE: Got my electric fan on
IP: Logged
Message:
seems like you are accelerating the wear on the fan motor by
running it needlessly regardless of current draw
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