• Welcome to ClassicBroncos! - You are currently viewing the forums as a GUEST. To take advantage of all the site features, please take a moment to register. It's fast, simple and absolutely free. So please join our community today!
    If you have problems registering or can't log into your account, please contact Admin.

RJM EFI harness and American autowire harness?

pk8950

New Member
Joined
Feb 11, 2011
Messages
86
Loc.
Solon, Iowa
I have multiple questions. Ill try to be as descriptive as possible.

#1 On the RJM efi harness the three wires that go back under dash. one goes to oil ,one goes to water temp, other(orange wire) is supposed to go to keyed run. RJM instructions show all other harness manuf. except aaw. What wire do I hooked the keyed run wire to?

#2 I got the 3g alt. form RJM it came with the wire to turn on alt. from efi harness. Between both the wiring diagrams I got myself confused. All this is wiring by the start solenoid and battery (Pass. front). The RJM harness has a red wire marked battery which I assume goes to the Pos. on the bat. Also it has a purple wire that is marked tfi start. Where do I hook that to?

The Aww harness has a number of wires I need help with. First white wire with coil/tach on it since I'm not using a tach I'm assuming I wont use. Next brown wire marked Alternator ign. Do I need this with the 3g alt. and the rjm wiring? Next is pink wire marked Ignition feed. next is a red wire marked 12v battery. Last a purple wire marked starter solenoid. Do I hook all this up or does my RJM harness already do some of this?

#3 With all this I don't have any idea how to wire the Alt., starter solenoid and battery. Any help would be appreciated.
 

ransil

Bronco Guru
Joined
Sep 6, 2003
Messages
8,128
I have multiple questions. Ill try to be as descriptive as possible.

#1 On the RJM efi harness the three wires that go back under dash. one goes to oil ,one goes to water temp, other(orange wire) is supposed to go to keyed run. RJM instructions show all other harness manuf. except aaw. What wire do I hooked the keyed run wire to?

#2 I got the 3g alt. form RJM it came with the wire to turn on alt. from efi harness. Between both the wiring diagrams I got myself confused. All this is wiring by the start solenoid and battery (Pass. front). The RJM harness has a red wire marked battery which I assume goes to the Pos. on the bat. Also it has a purple wire that is marked tfi start. Where do I hook that to?

The Aww harness has a number of wires I need help with. First white wire with coil/tach on it since I'm not using a tach I'm assuming I wont use. Next brown wire marked Alternator ign. Do I need this with the 3g alt. and the rjm wiring? Next is pink wire marked Ignition feed. next is a red wire marked 12v battery. Last a purple wire marked starter solenoid. Do I hook all this up or does my RJM harness already do some of this?

#3 With all this I don't have any idea how to wire the Alt., starter solenoid and battery. Any help would be appreciated.


#1 find a wire in you AAw harness that is marked "Run" or " hot in run"

#2 hook this to the S post on the solenoid.this should only have 12 volts on it when the key is in the start position

others purple is the starter solenoid S post wire ( see #2) this is what enables the solenoid and starts the bronco.

Brown wire is redundant, use it or the one RJM provided. this wire turn on the alternator when the key is in run.

no tach leave the white wire disconnected ( might want to protect the end)RJm harness handles the coil and ignition wiring
 
Top