MGB & GT Forum

Guys, Can anyone help locate and isolate the IN-LINE-Fuse that supplies the Wipers and Blower motors? Sort of needle in the haystack hunting. Thanks!

Year of car?

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Wayne Sanders
Rose Lodge, OR
(TD 4288)

"I don't care to belong to any club that accepts people like me"-joined Willamette Valley Club in 2011

79/65 MGB - Carmine- V-6 - T-5

This car is now very nearly completely done. Sure to find something else, but not now.........And 12 years later, I'm starting to fix things that were new when we built the car. It's pretty well de-bugged!

Karl, I am guessing a '68-72 B from the picture. It's easier to help you if you update your profile to include year and at least all but the last 4 digits of the car ID (VIN) so people know better what you have.

Do your turn signals, brake lights, and reverse lights work? Tach? For cars 68-72, the fuse box has a terminal with green wires and that powers all of those systems. For 72 through end of chrome bumpers, there is an inline fuse taking White/Green off the ignition switch to Green/Pink to the heater & wiper motors. That fuse is likely behind the dashboard, and you'll find it by tracing the wires from the heater fan switch back to the ignition switch (or vice versa).

As many will say, search for Advance Autowire's online wiring diagrams, taken from the Bentley Manual. You can use either, the on-line version is colored for easier reading.

hope this helps.

Andy

In my 1972 USA this floating fuse with its black holder is behind the dash at the right, one can reach it by taking the rightside panel under the dash off, and/or removing the glove box (panel is easier). Originally I thought the white floating holder one under the fusebox held it, but in my B when this fuse holder failed, quite other effects could be noted on the gauges and their lights.

But be aware later model years had the fuse you are asking about indeed hanging under the fusebox. All the more reason to update your profile with the proper details on your B, preferably on both production and model year, but production year is minimum.

PS My B is different from other USA ones in that period for the fusing to wiper and fan motor: it contains two more floating fuses in the feed lines to wiper circuitry and the heater fan switch respectively. Since no one confirmed this elsewhere it seems an exception; wire color to both wiper and fan motor are still the right GK, green pink ones with me (and yours as well is my guess)



Edited 2 time(s). Last edit at 2017-08-18 03:36 AM by Donthuis.

Always below the fuse box in an in-line holder unless someone has "improved" the wiring.

Come on guys where's your manners.

NuB (Karl) go here;

http://www.advanceautowire.com/mgb.pdf

go to the sheet (13/14/15) referring to your 72 and download/save/print/laminate/put in garage.

Karl in your profile you can put in the year etc of your car, do so as it is easier than everyone having to ask all the time.

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Cheers Rob