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Adding relays to the low and high-beam circuits

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wkilleffer

wkilleffer

Jedi Knight
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Hey everyone,

The new switchgear is finally here and installed, so now it's time to add the relays to the circuits. The car's a 1974 MGB with a four-way fuse block. I haven't added any supplemental fuse panels or anything like that, though I have a couple of extra 4-way fuse blocks that could be pressed into service if needed.

There seem to be alot of different options for adding relays, but the part that concerns me right now is where to get the power to operate the relays. Most instructions talk about taking it off of the fuse block using a pretty heavy gauge wire, but they don't give much assistance as to which terminal to use.

The Bentley manual says that if auxiliary equipment is to be added, that it should be connected to fuse terminal B. Trouble is that I can't find a terminal marked B on any of my fuse blocks. Am I missing something?

Does anyone have any other suggestions that might work better? Any photos they could share? I'm trying to keep things pretty simple, just using wire and relays from Pep Boys. Hoping to finish before the weekend's over.

Any assistance would very much be appreciated.

Thank you,
-Bill
 
I ran mine off the solenoid, two wires actually one for low and one for high figured it was insurance. I use the diagram from here plus the article from Classic Motorsports. I have the article in PDF if you PM me your email, I can send it. it's not difficult to do

https://www.advanceautowire.com/
 
May I ask what kit & why?
 
Hey Tony,
I think the kit is sold on a website called www.bits4brits.com. 3-relay kit that handles hi/lo beam and horns. Supposed to be basically plug-n-play and easily removed.
 
https://www.bits4brits.net/

Great kits and plug and play.

I'm ordering the fuse panel kit as well. It replaces the factory fuse panel and gives you two additional fuses
 
That relay kit also uses the factory color coded wiring. I don't have one, but helped a friend install one. It's a very nice kit - especially for anyone who is "electrically challenged".
 
Joe Reed said:
That relay kit also uses the factory color coded wiring. I don't have one, but helped a friend install one. It's a very nice kit - especially for anyone who is "electrically challenged".
Click to expand...

I'm "electrically challenged" and easily installed Eric's fuse and relay kit. It works great and I would highly recommend!
 
I too have it installed in my MG. Took about 15 minutes to install. The light are noticably brighter and the horn louder.
 
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