Harness terminology
08-28-2009 | 02:55 PM
#1
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Teching In
Joined: Aug 2007
Posts: 36
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From: Lindenhurst, Long Island, New York
Harness terminology Hey guys, sorry if this has been covered, but I haven't found it searching. I'm currently trying to figure out what needs constant power, ignition power and basically supply power to the engine harness. But I'm coming across a snag. I've found a lot of sources and wiring diagrams, but they all eventually mention a 'terminal' such as 'terminal 85.' That specific one has something to od with a fuel pump relay. Can anyone tell what this is? I can't seem to find what terminals are on any wiring diagram.
Also, how did the engine harness get power from the fuse box initially? Was all the power supplied through connections C100, 101 and 105?
Also, how did the engine harness get power from the fuse box initially? Was all the power supplied through connections C100, 101 and 105?
08-28-2009 | 04:00 PM
#2
The word "Terminal" in wiring diagrams just refers to a connector pin. In your case, "terminal 85" is one of the pins found on a relay. The other relay terminals are 86,87,87a and 30. Regarding the fuel pump circuit, terminal 85 should be connected to ground,terminal 86 to the PCM, terminal 30 to fused 12V and terminal 87 to the fuel pump power lead.
You are correct the power is supplied via a C connectors.
You are correct the power is supplied via a C connectors.
08-28-2009 | 06:52 PM
#4
Thread Starter
Teching In
Joined: Aug 2007
Posts: 36
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From: Lindenhurst, Long Island, New York
Ok. Ok. I think I'm getting this. So I guess the next question is that how to I determine what terminal is what? I'm talking on the physical relay. Sorry to be such a pain on this. I'll check the diagrams again to try to answer my own question. Got to learn somehow!
So all the power to drive everything on the harness is all fed through those three connectors? I figured there was another terminal somewhere else. That's great news if that's true!
So all the power to drive everything on the harness is all fed through those three connectors? I figured there was another terminal somewhere else. That's great news if that's true!
08-29-2009 | 06:26 AM
#6
Hey guys, sorry if this has been covered, but I haven't found it searching. I'm currently trying to figure out what needs constant power, ignition power and basically supply power to the engine harness. But I'm coming across a snag. I've found a lot of sources and wiring diagrams, but they all eventually mention a 'terminal' such as 'terminal 85.' That specific one has something to od with a fuel pump relay. Can anyone tell what this is? I can't seem to find what terminals are on any wiring diagram.
Also, how did the engine harness get power from the fuse box initially? Was all the power supplied through connections C100, 101 and 105?
Also, how did the engine harness get power from the fuse box initially? Was all the power supplied through connections C100, 101 and 105?
Either email or PM me through my user name (click on my user name by this post) and tell me what the harness is out of and what vehicle you're putting it in (I'm assuming the vette) and I'll see what I have in wiring diagrams for it. I considered doing that swap in to my 79, but decided I'm going with a 350 ramjet, it seemed much easier, actually it looks bolt in, except for the accessories
08-31-2009 | 08:43 AM
#7
Thread Starter
Teching In
Joined: Aug 2007
Posts: 36
Likes: 0
From: Lindenhurst, Long Island, New York
Either email or PM me through my user name (click on my user name by this post) and tell me what the harness is out of and what vehicle you're putting it in (I'm assuming the vette) and I'll see what I have in wiring diagrams for it. I considered doing that swap in to my 79, but decided I'm going with a 350 ramjet, it seemed much easier, actually it looks bolt in, except for the accessories
