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MG MGB Technical - Recommendations for in-line fuses

Hello. Restoring a '72 bgt. I will tell you that I'm an idiot when it comes to electricity. But my wife says I shouldn't be so negative, so to speak. So let's say I'm a tad rusty with electrical theory. Have a new wiring harness and have been bench-fitting the dash switches and wiring. I've read that I should add an in-line fuse for the overdrive which I've done (from the yellow supply wire in the engine compartment). I also plan to install relays for the headlights.

Any recommendations for other circuits where I should add fuses or relays?

Thanks, Tom
Tom Custer

A relay for the fan motor in the heater box is worthwhile. It needs all the juice that it can get! If you're going to run brighter turn signal and break light bulbs, relays are a good idea there to protect your switches from overload.
Steve S.

Headlights as well I've been told.
Peter

Windscreen wiper motor. I have not done this yet but it has been recommended to me.

Allen
Allen Bachelder

For the headlight circuit I use a circuit breaker. They reset automaticaly. In US cars a circuit breaker was built into the headlight switch. you can get the breakers from NAPA among others. About $7
John H

Thanks for the info gents. Allen, my new harness came with an in-line fuse holder already built in to the loom -- green/white wire to green/pink I believe which goes to the wiper. Which brings me to another question. How do does one determine what size fuse to use?

BTW, I looked at Twist's youtube video re: adding a fuse to the red/green wire that comes off the headlamp switch in order to protect the dash lamp circuit. He suggested using a 10 amp fuse.

Thanks,
Tom
Tom Custer

This thread was discussed between 30/07/2008 and 31/07/2008

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