Start Solenoid and a Relay Wiring I.D. Help - JeepForum.com

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post #1 of 16 Old 07-26-2010, 12:29 PM Thread Starter
frank c
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Start Solenoid and a Relay Wiring I.D. Help

I HAVE A BIG W. T. F. ???? from the P.O. goin on here.
These pics are from my 1981 cj5 258 .
I need to find out about this nightmare wiring the Previous Owner/Hacker has ,
The first pic shows a RELAY in yellow circle this mounts next to the start solenoid on pass. fender.
1.) Is this a STARTER RELAY ?? SHOULD this relay be wired in to the start wires ??? Is this a factory type relay setup before the solenoid ??? I'm not familiar with the ford start system on my Jeep.
2.) The 2 terminals at the blue arrows are push on connections to the starter solenoid. Question is The BLUE crimp connector has the BLACK wire from the relay crimped to the BLUE wire push on connector, This doesn't seem right ??
3.) The light blue wire from the major wire harness is crimp connected to the WHITE wire from the solenoid ?? Instead of going to the Blue push on connection for the solenoid
4.) The ORANGE wire goes NOWHERE ????
5.) The BLACK wire circled in red from the main harness with the 90 degree push on connector goes NOWHERE ????
Can this be right ???? I thought you have a BLUE wire AND a RED wire to the push on connects at the start SOLENOID
I'm having a MENTAL FART WITH THIS.
I'm used to OLD chevys with the start solenoid on the starter.
ANY HELP THANK YOU.

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new 035.jpg   sol.JPG  

Last edited by frank c; 07-26-2010 at 04:06 PM.
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post #2 of 16 Old 07-26-2010, 04:05 PM
BioTex
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I'm not sure that an 81 has one, but that relay looks like an intake manifold heater relay. Mine mounts on the firewall about center. I would have to find a diagram to be sure. The easies thing to do, IMO, is to strip off all the plasic wrap, and starting at the firewall connector, trace them each out and label them. Cut them to size, and solder and heat shrink wrap them back up.
Attached Thumbnails
FirewallplugDetails.jpg   80-86BUHeaterFuseSchematic.jpg   CJ7-Wiring-diagram.jpg   CJ7-Wiring-diagram2.jpg   CJ7-Wiring-diagram3.jpg  


'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
1986 CJ10-A SD-33 Diesel/727/np208
1971 800B with 345/T-19
06' TJ Rubicon, 4" R.C. springs, BFG/AT 35s M.C. 6" fenders, rockers and surrounds, Currie front & rear adj. tracbars, tattons DC rear shaft, adj. upper - lower CA's. Bilstein 5100's
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post #3 of 16 Old 07-26-2010, 04:10 PM Thread Starter
frank c
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I have a relay about halfway in on the firewall that goes to my manifold heater .
This is another relay I am questioning next to the start solenoid, it has the ignition blue wire going to it
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post #4 of 16 Old 07-26-2010, 04:18 PM
BioTex
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I'll bet it was for aftermarket driving lights then... or some kind of anti theft kill switch maybe.

I'm sure there are some other possibilities I'm not thinking of ...

'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
1986 CJ10-A SD-33 Diesel/727/np208
1971 800B with 345/T-19
06' TJ Rubicon, 4" R.C. springs, BFG/AT 35s M.C. 6" fenders, rockers and surrounds, Currie front & rear adj. tracbars, tattons DC rear shaft, adj. upper - lower CA's. Bilstein 5100's
YJ Buggy Build Current project. Stroker/FI ?
1990 MJ Comanche 4.0L AX15/np231
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post #5 of 16 Old 07-26-2010, 04:55 PM Thread Starter
frank c
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Thats what I'm trying to figure out, was it a factory relay for the start solenoid or not.
Because if I knew it wasn't supposed to be there for the start system I would remove it and hook up the wires according to diagrams I have seen on the forum with blu an red to start solenoid.
But that leaves me wondering what the black wire from the main harness with the 90 degree push on connect was for...?? There are only 2 studs on the solenoid for push on connects blue/red ,,,, so W.T.F. could the factory black harness wire go to ??????? Am I missing some other electronic component that mounts around the passenger side fenderwell .???
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post #6 of 16 Old 07-26-2010, 08:08 PM Thread Starter
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post #7 of 16 Old 07-26-2010, 08:19 PM
VACJ7
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The black wire with the push on boot connector could be if the CJ ever was an automatic. We have a third post on the solenoid for a ground wire that goes to a neutral saftey switch.
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post #8 of 16 Old 07-26-2010, 08:49 PM Thread Starter
frank c
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So do you guys think this relay was put in aftermarket,
And it is definitely NOT a part of the factory wiring for the iginition/start system??
According to all the diagrams I've seen so far I've never seen a relay involved anywhere with the starter solenoid.
I guess I'll cut everything and go ahead and wire it by the diagrams I have bookmarked from Jeephammer posts recently.
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post #9 of 16 Old 07-27-2010, 03:18 AM
John Strenk
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Quote:
Originally Posted by BioTex View Post
I'll bet it was for aftermarket driving lights then... or some kind of anti theft kill switch maybe.

I'm sure there are some other possibilities I'm not thinking of ...
I think you are right, Someone put the relay in to interrupt the power to the starter relay when the key is in the "Start" position. Probably for a home made security system. It would be interesting drawing power off the wire as he has it. May not have enough power to pull the relay in to start jeep.


Red wire from the harness to the "I" terminal, Blue wire from the harness to the "S" terminal. Black wire from the harness not needed unless you have an automatic. Automatic requires a special Starter solenoid like VACJ7 says.

Cut the rest out.
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post #10 of 16 Old 07-27-2010, 05:23 AM Thread Starter
frank c
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Much appreciated your replies gentlemen.
Took the starter and alternator in for testing before installing. Started is NO GOOD , so P.O. may have deteriorated it from this haphazzard wiring setup.
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post #11 of 16 Old 02-02-2011, 09:27 AM
climberman
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Will these diagrams be the same if you have a 1979 cj5 but with a newer 258 maybe a 1982.
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post #12 of 16 Old 02-02-2011, 10:14 AM
John Strenk
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Quote:
Originally Posted by climberman View Post
Will these diagrams be the same if you have a 1979 cj5 but with a newer 258 maybe a 1982.

Just about the same. It doesn't really matter what year 258. THey all hook up basically the same way. the difference between the 79 and 82 harness is minimal and quite frankly, you can use any harness in any late model CJ and get it to run properly. I have an 84 harness in my 76. I could put a 79 harness in an 84 and it would run.
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post #13 of 16 Old 02-02-2011, 03:35 PM
climberman
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Thanks John for the reply those diagrams are the best I have see all thought the connector decoder doesn't seem to match the one I have exactly.



Rocky
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post #14 of 16 Old 01-28-2012, 03:41 PM
DENVAR03
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JOHN
while you are solving another problem,may i ask one my self.the black battery cable .i think gets grounded to the starter blot.is that correct?and the other black cable goes from starter to solinoid?.

thanks again!!!!!
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post #15 of 16 Old 01-28-2012, 04:00 PM
climberman
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I just bolted my ground cable to the engine and the black cable from the start goes to the solinoid

Hope that helps maybe someone else will help out
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aftermarket lights , relay , solenoid , starter solenoid , wiring , wiring harness

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