Coil
#1
Posted 21 January 2020 - 03:10 PM
#2
Posted 21 January 2020 - 03:16 PM
It does not matter really. But the casing will be marked.
#3
Posted 21 January 2020 - 04:05 PM
And if it's not marked maybe just get another one that is.
#4
Posted 22 January 2020 - 05:18 PM
#5
Posted 22 January 2020 - 05:28 PM
#6
Posted 22 January 2020 - 06:51 PM
#7
Posted 22 January 2020 - 07:09 PM
Depending on exactly what year and model mini it is and what brand the electronic ignition is generally the white wire from the loom goes to the + on the coil and red wire to ignition modual and the white/black wire in loom goes to coil - and black wire to ignition modual.
#8
Posted 22 January 2020 - 09:01 PM
#9
Posted 22 January 2020 - 09:19 PM
Is the car positive or negative earth? If negative earth, the ignition feed (12v constant live) goes to the + terminal. The negative terminal goes to the contact breaker
#10
Posted 22 January 2020 - 11:44 PM
If the car is 55 years old it is probably positive earth. If you are changing to an A+ engine with an alternator it will be negative earth as will the A+ electronic ignition. Convert the car to negative earth
#11
Posted 23 January 2020 - 10:58 AM
#12
Posted 23 January 2020 - 12:14 PM
If the car is 55 years old it is probably positive earth. If you are changing to an A+ engine with an alternator it will be negative earth as will the A+ electronic ignition. Convert the car to negative earth
This is the bottom line - the diodes in an alternator dictate it has to be all wired -ve earth really.
Polarity doesn't matter to the coil, but having the primary and secondary windings the right way round does. The -ve terminal is on the primary and goes to the distributor. Though it's possible transistorised ignition modules won't like that.
#13
Posted 23 January 2020 - 07:04 PM
Are you asking how to use the multimeter to find which of the 2 wires is live when the ignition switch is turned on?
If so, set the multimeter to DC Volts (if there are options then 0-20V or similar)
Then hold the black probe to an earth point such as the cylinder head studs
Now (with the ignition turned on) touch the red probe onto each wire in turn and see which records an output on the meter - that one is the ignition live.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users