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#21
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But yes, if the reverse switch is left in place the best thing would be to run the separate neg to the motor and then you might as well run the fourth wire out too! Or leave the controller outside by the fan and only run the control wires for the knob into the cabin. A length of cat 3 wire poked through the A/C evaporator line seal would probably do the trick.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) Last edited by 80stech; 03-11-2024 at 06:51 PM. |
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#22
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I was about to suggest that very thing - although it doubles as an ON/OFF switch. Maybe just removed the wire for the reverse operation?
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#23
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Yep, just disconnecting the reverse wire would be a lot less technical and still leave off in place
Depending on how the circuit works there might not be a "reverse" wire and disconnecting any wire might be "Off"
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) Last edited by 80stech; 03-11-2024 at 07:22 PM. |
#24
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Quote:
I was sorta worried about causing a problem in another system (if I was to make the controller share grounds with a BMW module, and thus cause problems with it); and seeing no grounds in those two spots, in the Bentley, I thought they might be safe to use. And, in my racing experience, a bad shared ground can make for a bad day, so we isolated our grounds from others (makes a problem easier to trace). P.S. I have had automotive audio problems before I learned to not share circuits or grounds, so good suggestions! Quote:
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#25
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NO, the neg motor output from the controller becomes positive in reverse so it needs to go to the motor only and NOT to ground.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#26
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maybe?
See what I mean, I know just enough to screw the pooch. Thanks for setting me straight, again!
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide Last edited by workingonit; 03-11-2024 at 08:28 PM. Reason: adding drawing |
#27
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yep, that's better just make sure that there is no ground hooked to the motor negative.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#28
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a little schooling never hurts
Attachment 84024
Quote:
I'll disconnect the fan negative from the existing chassis ground, then hook that wire to the controller negative output wire, with neither wire touching the chassis metal, right? Edit, March 16, 2024
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide Last edited by workingonit; 03-16-2024 at 04:14 PM. Reason: added info |
#29
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Yep
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#30
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a photo showing the proper "forward" switch position, finally
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Of course, with the switch on my unit coming from China, there's no guarantee that it's wired the same as another. Also, since the Flexalite fan is "brushed", it probably will run in reverse, with no harm done to the motor (perhaps switched by accident, or in testing). I've had many brushed fans that I've reversed, so perhaps this "puller" fan can reverse, too, but is designed for optimal airflow in only the advertised direction.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide Last edited by workingonit; 03-15-2024 at 10:05 AM. |
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