1950 plymouth with 360 engine
04-14-2015, 12:39 PM
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1950 plymouth with 360 engine
i am replacing the engine, tranny etc and upgrading to 12 volt system on my grandpa's car. what i need to get advice on is wiring harness and can i use original guages?
04-14-2015, 04:59 PM
#2
You would need some type of voltage regulator to use the 6 volt gauges with the 12volts.. Also with a 360 (great motor) put an overdrive auto trans in it !!!! Or a 5 speed with a Hyd clutch slave
04-14-2015, 09:34 PM
#3
There are regulators called something like "Runtz" google them. I think you need one for each gauge
Ammeter, all you have to do is reverse the connections, IE changing from pos to neg ground
Motors, like wipers and heater blower, if still six volt, you need dropping resistors
I assume you'll use all 12V stuff for ignition, alternator, etc.
Ammeter, all you have to do is reverse the connections, IE changing from pos to neg ground
Motors, like wipers and heater blower, if still six volt, you need dropping resistors
I assume you'll use all 12V stuff for ignition, alternator, etc.
04-15-2015, 10:33 AM
#5
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Your project sounds cool, have you got few pictures?
04-16-2015, 09:37 AM
#7
One thing comes to mind. What are you using for an ignition system, and what for an ignition switch?
This is important, "because."
If you are using points or Mopar breakerless, EG, the original resistor bypass system "for starting" is in the ignition switch. So if you are NOT using a Mopar ignition switch, you will have to take other measures. There are three methods
One is to use the later Jeep starter relay which has an extra contact. I don't know what all these are off of, but like below: The added terminal marked "bal" at lower left goes to coil pos.
http://oljeep.com/gw/elec/StarterRelay.jpg
You can also use a fairly heavy rectifier diode from the "run" line to the hot side of the coil
You can also use a "regular" Mopar starter relay and add in a bosch relay to fire along with the Mopar relay, and use the Bosch contacts to feed 12V to the coil.
IF YOU are using MSD or HEI which won't require a ballast, you don't need the above.
IF YOU are using a Mopar ignition switch in the above case, just wire the IGN1 and IGN2 terminals together. By a mopar switch, I mean one out of a 12V Mopar which has the two terminals, IE (older) blue for "run" (ign1) and brown for bypass (ign2)
This is important, "because."
If you are using points or Mopar breakerless, EG, the original resistor bypass system "for starting" is in the ignition switch. So if you are NOT using a Mopar ignition switch, you will have to take other measures. There are three methods
One is to use the later Jeep starter relay which has an extra contact. I don't know what all these are off of, but like below: The added terminal marked "bal" at lower left goes to coil pos.
http://oljeep.com/gw/elec/StarterRelay.jpg
You can also use a fairly heavy rectifier diode from the "run" line to the hot side of the coil
You can also use a "regular" Mopar starter relay and add in a bosch relay to fire along with the Mopar relay, and use the Bosch contacts to feed 12V to the coil.
IF YOU are using MSD or HEI which won't require a ballast, you don't need the above.
IF YOU are using a Mopar ignition switch in the above case, just wire the IGN1 and IGN2 terminals together. By a mopar switch, I mean one out of a 12V Mopar which has the two terminals, IE (older) blue for "run" (ign1) and brown for bypass (ign2)
04-17-2015, 09:11 PM
#9
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