 Replacement Bosch Fuel Pump wiring |
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| branston |
 May 27 2017, 07:04 PM
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#1
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Member  Group: Members Posts: 89 Joined: 17-October 12 From: Michigan Member No.: 15,053 Region Association: Upper MidWest  |
Replaced all my injection lines with the very nice Tangerine lines and installed a replacement Bosch 69133 fuel pump
 Wires to it from the loom need extending and the original plug cut off leaving a brown wire and black/red wire. Does it matter which way they are connected to the new fuel pump? the replacement pump has different sized screw on terminals making me think it has polarity, and I'd like the pump to rotate in the right direction or does it matter at all? need some help, after months of work I hope to fire up my 914 tomorrow!. Thanks |
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| theer |
May 27 2017, 07:11 PM
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#2
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Senior Member Group: Members Posts: 676 Joined: 31-July 15 From: Dover, MA Member No.: 19,014 Region Association: North East States 
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At the risk stating the obvious: Brown is ground (-), black/red is positive (+).
Are there any markings on the fuel pump terminals? |
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| BillC |
May 27 2017, 07:35 PM
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#3
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Senior Member Group: Members Posts: 536 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region
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The terminals of the new pump are marked "+" and "-", molded onto the plastic. The markings are small and kinda hard to see, but they're there. The brown wire goes to the "-" terminal and the other wire goes to the "+" terminal.
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| branston |
May 27 2017, 07:39 PM
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#4
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Member Group: Members Posts: 89 Joined: 17-October 12 From: Michigan Member No.: 15,053 Region Association: Upper MidWest |
QUOTE(BillC @ May 27 2017, 09:35 PM)  The terminals of the new pump are marked "+" and "-", molded onto the plastic. The markings are small and kinda hard to see, but they're there. The brown wire goes to the "-" terminal and the other wire goes to the "+" terminal. Duh, what I thought was an X may well be the +ve. but you are right its hard to see. And even harder now I installed it and connected the hoses (IMG:style_emoticons/default/w00t.gif) |
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| iankarr |
May 27 2017, 09:24 PM
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#5
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,472 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region
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+1
You don't need to cut the original plugs. Just make a short (3-4") pigtail with a screw eye on one end for the pump and male spade on the other to connect to the factory female connectors. There's pics of the ones I made in my youtube install video... https://www.youtube.com/watch?v=IDFsZoI_W3g&t=190s https://www.youtube.com/watch?v=IDFsZoI_W3g&t=190s |
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| branston |
May 28 2017, 08:24 AM
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#6
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Member Group: Members Posts: 89 Joined: 17-October 12 From: Michigan Member No.: 15,053 Region Association: Upper MidWest |
QUOTE(cuddyk @ May 27 2017, 11:24 PM) +1 You don't need to cut the original plugs. Just make a short (3-4") pigtail with a screw eye on one end for the pump and male spade on the other to connect to the factory female connectors. There's pics of the ones I made in my youtube install video... https://www.youtube.com/watch?v=IDFsZoI_W3g&t=190s https://www.youtube.com/watch?v=IDFsZoI_W3g&t=190s I didn't see the terminals inside the pug until I cut it off, I'll just extend it now, but thanks! |
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