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Old 09-14-2006, 11:30 PM   #1
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Default Fan override

I just spent a few hours reading through all kinds of old posts. And i made a few decisions one being i am going to take off and clean my TB, the next being i am going to drill my thermostat and the next being i want to do the fan override. After finding as many posts as i could about the override i am still a little confused. Would this be the right process http://www.cardomain.com/ride/613816/10
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Old 09-14-2006, 11:46 PM   #2
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http://www.bonnevilleclub.com/forum/...ic.php?t=16737

But I've since found an easier way. No wires through the firewall.
Do a search on 'happy box' by me. You'll see that I found the wire at the PCM harness (which is below your glovebox).

You'll need someone with a 94 FSM to identify which connector and wire you need to ground through the switch. For something like this, I wouldn't trust my 93 and 95 FSM'*.

Edit.....thought you had a 94. You have a 95. Same wiring as mine. Now I have to find my schematics......unless you prefer to run a wire through the firewall to the high-speed relay. Let me know.
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Old 09-14-2006, 11:55 PM   #3
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which ever way is more efficant if any. if both are the same then the easier way. i want to thank you, you have been pretty helpful to me lately.
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Old 09-15-2006, 12:07 AM   #4
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TJ, I just moved recently, a week early due to my Mother'* passing in CA, and haven't found everything yet. My 3-volume 95 FSM is missing it'* most important third, and I can't locate my happy box schematic.

Can ANYone with a 95 FSM give us the connector and wire number for the high speed relay ground wire?
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Old 09-15-2006, 12:09 AM   #5
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dont worry about it. If someone else has it just chime in. It is nice to have people like you around on the club it makes things much easier and more enjoyable
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Old 09-15-2006, 12:43 AM   #6
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Duh.

:slaps forehead:


My happy box wiring wouldn't apply to a 95 anyway. That was on the 93 (works good too!)

Found the missing volume.

1. Remove the passenger side kickpanel above the passenger footwell (below the glovebox).

2. Remove the 10mm bolt from the black bracket that holds the SILVER colored PCM.

3. Spit, curse, and rant as you wiggle that PCM out of it'* tight freaking hole.

4. Now that it'* somewhat accessible, disconnect the negative terminal from the battery.

5. Locate connector D on the PCM. I have no clue what color it is on the 95, as I've never had it out of my SLE. It should have a dark blue wire on position 10. For reference it should also have a dark green wire on 11, Brn/wht on 13, dk grn/wht on 15, tan on 1 and 2, pnk/blk on 4, purple on 3, grn/wht on 12, dk blue on 16, and red/blk on 3. This is to help you identify the right connector. Regardless, wire TEN (10) is dark blue.

6. Get an inline splice. Tie IN to that wire. Do not cut it. You're creating a branch in the circuit.

7. Run that NEW wire branched into pin 10 through a switch, and then to ground (that wire comes in to one contact of the switch, the other contact to ground......any wire going into metal in the passenger compartment).

What you're doing is not waiting for the PCM request for the high speed fans. The PCM controls the ground to the high speed fan relay. You give it that ground when YOU want it.

Questions?
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Old 09-15-2006, 12:48 AM   #7
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That sounds straight forward. Is there any special kind of wire to use? and any toggle switch will work correct? I am going to attemp this this weekend, if i have any problems i will post them on here.
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Old 09-15-2006, 12:52 AM   #8
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TJ, anything for wire between 14 and 20 gauge will work. The coil for the high speed fan relay doesn't demand much juice.

Any switch at Radio Shack rated for ANY amount of power. There simply isn't much. Not even an amp. The coil of the relay demands very little, but the CONTACTS (which you're not messing with) in the relay switch the power to the fan (probably 5 amps or so, but it matters not, Padwan).

Just make sure you use my wire color guide to figure out which wire it is. Have a helper read it off. Move your passenger seat fully down and to the rear, then recline it. You can be upside down in the footwell looking up at the PCM wiring to work.

I just hope you're not a tall one. Smaller, shorter members will have a better time of this.
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Old 09-15-2006, 01:00 AM   #9
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it might be tight because i am tall but i am going to give her hell. Well i am off to bed, college in the morning. If i run into problems i will pm you. Thanx again.
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Old 09-15-2006, 01:04 AM   #10
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My advice comes at a price. You must now pay me for it.

I DEMAND (and will receive) a publicly-posted pic of your tall, lanky self firmly planted upside down working on your PCM in the passenger footwell.

Godspeed, friend. I pray you have a photographer with a steady hand.
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