QuestionQUESTION: I am upgrading my "78" MGB to halogen headlights. I have the new heavy duty wiring harness and need to know where the easiest place to tap into the "hot wire" from the battery is or should I run a new wire from the battery for new harness
ANSWER: Jim, this is a high-amperage-draw item, and your MGB's harness is over 30 years old, and, well...it's LUCAS, if you get my meaning.
You're going to need two relays, and some heavy-gauge wires to run between relays and your high and low beams. You'll also have to fuse each headlight separately with a 15A fuse to protect the system.
The relays are Bosch #0 332 019 050, and are available worldwide. The numbers given in the diagram for the relay terminals are printed right on the relay. Don't attempt to do this without a relay, heavy wiring, etc, or you will have dim lights and overheated wires with the possibility of overheating and a vehicle fire!
Good luck!
--Paul
---------- FOLLOW-UP ----------
QUESTION: Paul, Thank you for getting back to me so fast. I bought a "Heavy-Duty Headlight Harness" from Victoria British the part no. is 10-679. Is this all that I need? If not let me know what else I need. The instructions said that all I need was to find a place that feeds directly from the battery. That is what I needa close place to hook into.
I really appreciate the help that you have given me in the past. Again, Thank You.
Jim
AnswerOh, yes. I recall buying parts from them in my Tiger days...that harness is all you need. But you should pull power directly from the battery with a 12 gauge wire. Don't trust the factory wiring. Protect the wire with a flex sheath, secure it well, and hide it under seats, carpeting, etc. I run mine along the rocker on the driver's side.
--Paul
