fj55 distributor wiring help

Joined
Jul 29, 2021
Messages
3
Location
Ottawa
I have a 2F engine out of a 78 fj55 and its going into my 1975 FJ55. I am trying to get the wiring figured out because the harness is a mess with a lot of cut and missing wires. the distributor has a 3 pin plug that i believe is supposed to come from the exciter or the coil. i have looked for it but it does not seem to exist on the harness and I am trying to find out where it would be connected and in what manner so i can make a new plug. any body have some in depth pictures or information to help out?
311594581_2282137745297763_1493937979107010247_n.jpg
 
Joined
Sep 20, 2022
Messages
553
Location
35th parallel north
It looks like just one wire, pictured above. Basically, the low voltage side (points) close and ground out what would normally fire the coil. Sometimes a capacitor is located on the distributor housing or on the breaker plate, if you are running non-igniter ignition (early or non-USA / simple) at the coil.

I recommend using solid, non-insulated, butt-connectors, AIRIC brand. It is so much easier to see what you are doing, they are easy to use with cheap wire stripper/crimper, and leave minimal bulk. Forget factory connectors when convenient, especially if is just one or two wires on the harness, just shrinkwrap over the connection with a cigarette lighter, add harness tape if needed for extra abrasion resistance. Dorman or NAPA wire from the spool at the otc section.

Shine a flashlight on a mirror under the resistor of the coil. Is the resistor good, visually?
 
Last edited:
Joined
Jul 29, 2021
Messages
3
Location
Ottawa
It looks like just one wire, pictured above. Basically, the low voltage side (points) close and ground out what would normally fire the coil. Sometimes a capacitor is located on the distributor housing or on the breaker plate, if you are running non-igniter ignition (early or non-USA / simple) at the coil.

I recommend using solid, non-insulated, butt-connectors, AIRIC brand. It is so much easier to see what you are doing, they are easy to use with cheap wire stripper/crimper, and leave minimal bulk. Forget factory connectors when convenient, especially if is just one or two wires on the harness, just shrinkwrap over the connection with a cigarette lighter, add harness tape if needed for extra abrasion resistance. Dorman or NAPA wire from the spool at the otc section.
311979797_2282172651960939_3630778575244013298_n.jpg
there does seem to be a capacitor installed on the system after i took the old coil off
 
Joined
Sep 20, 2022
Messages
553
Location
35th parallel north
I'd clean the threaded parts on the factory coil, apply dielectric grease, and see if that one works before messing with the replacement/'trail-spare.'
 

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