MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - polarity of horns & ammeter

Well, my rewiring is proceeding at a leisurely pace. The old wires had no color left. Does it matter which of the two wires attached to a horn goes where, or are the correction points interchangable? For the ammeter, obviously it does matter, but I don't know which wire goes on which side. I could do trial and error, but it would be easier to get it right the first time.
Richard Greenberg

Richard - The horns are not polarity sensitive, so it doesn't matter which way they are wired. The Ammeter is polarity sensitive, but it doesn't hurt anything if is hooked up backward, it will just read in the wrong direction. You could hook it up to a battery charger (set for a low charge and a light bulb and see which terminal is positive and which is negative and mark them before installing it. Cheers - Dave
David DuBois

Thanks Dave. Probably trial and error will be as easy as anything else. I have a 50% chance of getting it right the first time. Maybe someone recalls which way works. By the way, as I was planning the routing of the headlight wires, i noticed the radiator is leaking. Oh no! I guess it will come out now, which at least will make wiring easier!
Richard Greenberg

This thread was discussed on 08/05/2010

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.