Dreaded Power/Fuse Box question - MVAgusta.net
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post #1 of 25 (permalink) Old 01-22-2009, 09:30 AM Thread Starter
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Dreaded Power/Fuse Box question

Hi Folks,
I have a 04 Brutale and it looks like I have the common problem with the fuse box. No juice at the fuel pump/coil fuse. Big brown bubble on the back of the box under the pretty blue stuff.

1) Where do I buy one ( ouch )
2) anyone powered the fuel pump/coils with a external relay?

Thanks
Bill
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post #2 of 25 (permalink) Old 01-22-2009, 10:41 AM
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ebay uk

'08 F4R312
'06 Brutale 910
'06 Triumph Daytona 675 - track
'04 Ducati ST4s sold
'05 Ducati Monster S2R 800 sold
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post #3 of 25 (permalink) Old 01-22-2009, 11:14 AM Thread Starter
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Didn't even know they had a separate Ebay over there !
Thanks

Looked, nothing there...anyone else?
Thanks

Bill

Last edited by Blast54; 01-22-2009 at 12:09 PM.
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post #4 of 25 (permalink) Old 01-22-2009, 12:22 PM
 
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Hi Blast i haven't seen any on E BAY mate. New from dealer.
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post #5 of 25 (permalink) Old 01-22-2009, 12:30 PM Thread Starter
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I am new at MV but from I hear parts are scarce here and HD is supposed to be taking over. Let me see if I get any suggestions for this side of the pond and if not, will have to order something over there.
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post #6 of 25 (permalink) Old 01-22-2009, 01:41 PM
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I don't have a wiring diagram in front of me at present but off the top of my head I'd say it shouldn't be too difficult to fit an external pump/coil relay.

If memory serves correctly, the switched power feed that supplies the fuse box's internal pump relay loops out and then back into the fuse box (pins 6 and 7 from memory but don't quote me on it). This loopback could be used to supply a live feed for an external relay, the internal relay coil is also feed with a permanent live so this loopback could also be used to supply a positive feed to the external relay's trigger coil.The actual relay coil trigger comes from the ECU as an open collector output so that's just a simple case of working out which cable triggers the relay and connecting it to the external relay.

The only thing you won't be able to do easily is make use of the existing pump fuse so perhaps fitting a relay holder with integral fuse holder would be best suited.
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post #7 of 25 (permalink) Old 01-22-2009, 01:50 PM Thread Starter
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Thanks Hartley, I have a diagram but is too small to read ( came with the manual) I wlll pick up a magnifying glass this evening and see if I can make sense out of it.

Lots of good info on this forum. Hope I don't need to all of it keep this bike running )

Bill
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post #8 of 25 (permalink) Old 01-22-2009, 02:30 PM
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You are lucky, Bill. Hartley Hare is the resident electrical guru. Follow his instructions and you won't go wrong.

CAG
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post #9 of 25 (permalink) Old 01-24-2009, 09:26 PM Thread Starter
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Family emergency,
Project is on hold but will be asking you folks for advise when things stabilize here.

Thanks
Bill
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post #10 of 25 (permalink) Old 01-25-2009, 07:05 PM
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Kind words CAG, thanks.

Blast54, when you get the time to get back round to it, I have attached the wiring diagram in .pdf format. It's not as clear as perhaps it could be but should be easier to read than the hard copy that comes with the owners manual. The last page of the .pdf file also contains a block diagram of the fuse box internals and details the individual pin numbers.

Looking at the wiring and block diagrams it should be relativly straight forward to fit an external relay for the pump and coils.
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File Type: pdf Brutale-750-wiring-diagram.pdf (291.9 KB, 596 views)
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