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Author Topic:  installing a bl705
Gary Glisson

 

From:
munford, tn 38058
Post  Posted 4 Nov 2016 7:36 pm    
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hi i'am going to install a bl705 pick up on my mullen rp guitar and install to the existing wiring that's there need help on how to wire the 705 to the existing wiring or if anyone has a diagram or a video on how to do this ?
thanks gary
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carter D-10, 2 fender steel king amp,peavey profex II moded ,bbe882i, hush pro fender delux 85 amp two boss katana 1-12's
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Lane Gray


From:
Topeka, KS
Post  Posted 4 Nov 2016 8:05 pm    
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Red wire is the full hot wire, black and braid go to ground.
Tie the white and green together and either:
1) tape them together so they won't get in mischief, or;

2) hide a spst switch under the guitar like along the apron and put the white/green pair on one side, and the other side to ground (if you're me, you'll do this, because the 705 is a good light-wound honky-tonk single coil pickup). When the switch is open, it's a humbucker, when it's closed, you short one coil to ground and only one coil sends a signal
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2 pedal steels, a lapStrat, and an 8-string Dobro (and 3 ukes)
More amps than guitars, and not many effects


Last edited by Lane Gray on 6 Nov 2016 9:30 pm; edited 1 time in total
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Wesley Medlen

 

From:
LaCygne,Ks
Post  Posted 5 Nov 2016 3:11 am    
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I installed one of these in my BMI and found the red was the hot wire. Got this info from a dealer on these pups.
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Roger Palmer


From:
Rossendale, UK
Post  Posted 5 Nov 2016 3:29 am    
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Just put al L705 in my GFI the red was hot.....the green and white came already tied together
Plan on adding a switch when I get one
It's brought out the Fender sound out of the GFI
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Bruce Derr

 

From:
Lee, New Hampshire, USA
Post  Posted 6 Nov 2016 8:46 pm    
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For the 705 reissue:
Red = hot
White and green = inside ends of coils, tie together for normal series humbucking
Black = ground

The original 705 4-wire version may have had different color assignments.

I have the reissue in my Carter and just put one in my GFI. Nice pickup for those two guitars.

On the GFI I wired a switch to let me select either half of the pickup for the single coil mode. I wanted to see if there was much of a difference. It's noticeable but the difference isn't significant.

A series/parallel switch is useful as well. Sounds like a single coil but is humbucking.
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Lane Gray


From:
Topeka, KS
Post  Posted 6 Nov 2016 9:29 pm    
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Bruce, you're right. Just looked it up here
http://www.guitarelectronics.com/category/wiring_resources_guitar_wiring_diagrams.humbucker_wiring_color_codes/
My description would have the two coils in parallel rather than series.
Stupid memory. I was SURE I'd had it right.
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2 pedal steels, a lapStrat, and an 8-string Dobro (and 3 ukes)
More amps than guitars, and not many effects
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Roger Palmer


From:
Rossendale, UK
Post  Posted 7 Nov 2016 2:57 am    
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Hi Bruce....did you make any modifications to the pickup on your GFI? I put one in mine but its only 3mm which is about 2/16" from the strings and keeps distorting my amps....tried taking the base plate off but its stuck on there. Nice sounding pickup but I need a way of lowering it a few mm
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Bruce Derr

 

From:
Lee, New Hampshire, USA
Post  Posted 7 Nov 2016 5:37 pm    
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Roger, I just checked my GFI. Looks like 0.140" or about 3.5 mm from bar magnet to bottom of string at both sides, strings 1 and 10.

When I installed it I had to drill a new hole for the pickup cable. The original hole was at the corner of the pickup to accommodate the original GFI II pickup's wire location. If I hadn't drilled a new hole the pickup would have sat too high because of the wire underneath.

Jim Palenscar sold me the used 705 I put in there. It had come out of another GFI. He said the 705's mounting plate has to be shaved a bit to fit the GFI, and that had already been done on my pickup. I don't think that affected the mounting height, though.

The 705 in my Carter is much closer to the strings, 0.085" at string 1 and 0.1" at string 10. Hasn't been a problem but maybe I'll try lowering it a bit.
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