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Has my 1976 mgb gt got a ballast resistor wire or unit

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Ballast Resistor re-wiring '87 dodge Ram 50

I have just wired the ballast to the coil on my 84 D-50 all but two wires...is yours fixed yet or still need help?

Posted on Sep 30, 2009

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SOURCE: 1976 mgb w/cat converter please

I have the same model year as yours, but that does not really matter. If you go to the back of your Haynes manual, the wiring color codes are spelled out for you specific to your car, It is possible that a new or rebuilt starter can be stuck (clearances on starter gear/and shaft) or that you somehow bolted it in slightly askew and it is stuck or cannot move properly. Spot check the ring gear teeth by looking through the starter hole to see if they are o.k. and that the gear on the starter seems correct.  Also, look around and check and make sure the ground strap is good (motor to body) or any ground for that matter Sometimes, if a motor or starter motor is in a locked rotor condition this will cause a heat rise. It might be a good idea to remove it and energize it with jumper cables from the battery-- (a bench test) to verify actuation. (spin)  Then wipe the grease of the leads (so you can read your color code) and carefully connect them to the terminals as the wiring diagram tells you in the Haynes manual.
MattJJ

Posted on Oct 11, 2009

elstretchie
  • 140 Answers

SOURCE: ballast resistor

Gday mate, geoff here. with the Ballast ressistor it is a voltage control unit in essence to lower the voltage hence give less power ( in all its forms, volts & amps ) further along the circut, if it is by passed then more wear n tear electrically will be done to what parts are protected by it, to be honest, millions of $ of developement go into cars to make them what they are, make your decisions from there, geoff

Posted on Feb 11, 2012

emissionwiz
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SOURCE: how to wire tachometre mgb gt 1972

The tach goes to the power and the ground and the signal lead goes to the negative terminal of the coil.

Posted on Nov 06, 2012

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I replaced the coil the engine ran good drove it shut it off and the coil is badgain


It is possible that you have had 2 bad coils, but it's unlikely. You don't say what the history of the second coil was or if it was new, or had been working reliably before you fitted it. You also don't say whether you fitted a third coil. I think I would be looking carefully at the wiring to the coil, maybe there is a bad connection. It is also unlikely that the coils are being destroyed by anything else After getting it going have you re fitted the second or first coil to make sure they still don't work? Finally you have you checked the ballast resistor if there is one and whether you have used the correct voltage coil.
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http://www.mgb-stuff.org.uk/

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1976 mgb w/cat converter please help- day 2 after changing to a new coil adn starter and i cannot get it to start -the last time ti tried- the starter got hot but still no start when i turned the key. i...


I have the same model year as yours, but that does not really matter. If you go to the back of your Haynes manual, the wiring color codes are spelled out for you specific to your car, It is possible that a new or rebuilt starter can be stuck (clearances on starter gear/and shaft) or that you somehow bolted it in slightly askew and it is stuck or cannot move properly. Spot check the ring gear teeth by looking through the starter hole to see if they are o.k. and that the gear on the starter seems correct.  Also, look around and check and make sure the ground strap is good (motor to body) or any ground for that matter Sometimes, if a motor or starter motor is in a locked rotor condition this will cause a heat rise. It might be a good idea to remove it and energize it with jumper cables from the battery-- (a bench test) to verify actuation. (spin)  Then wipe the grease of the leads (so you can read your color code) and carefully connect them to the terminals as the wiring diagram tells you in the Haynes manual.
MattJJ

Jul 18, 2008 | Morgan Aero 8 Cars & Trucks

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