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Unread 08-21-2013, 10:46 AM   #1
pook
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81 cj5 85 chevy 350 engine WIRING HELP!!!!

I am starting to wire my jeep cj5 with a 350 swap. I ran ignition wire to starter with south bridge connecttected battery to starter positive and grounded to body (passenger side fender under hood). I havent grounded chassis or motor yet as this was just to test ignition cylinder and starter function as well as identifying wires. Problem is my passenger side brake line started smoking when I attempted to turn ignition on. Is this caused by the frame not being grounded? Does anyone have a wiring diagram for this swap? Please help

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Unread 08-21-2013, 10:57 AM   #2
brownbagg
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I alway ground starter to frame and come off the same bolt to battery negative
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Unread 08-21-2013, 11:12 AM   #3
pook
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But would the frame not being ground cause my brake line to arc? The brake line thats arcing appears to have bare exposed betal below it on the lower radiator support where the passenger side brake line runs under radiator to passenger side caliper

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Unread 08-21-2013, 04:44 PM   #4
pook
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Also with the key in off position, connecting connecting battery cables to battery causes starter to attempt to engage... im puzzled

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Unread 09-08-2013, 01:08 PM   #5
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Did you check the blinker fluid?
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Unread 09-08-2013, 02:52 PM   #6
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Why would a brake line smoke? It has no conductivity and hopefully you're not to make it have any lol.
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Unread 09-08-2013, 02:53 PM   #7
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Unread 09-08-2013, 02:57 PM   #8
Mean Max
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Put proper grounds on it! It's try to find a ground!

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Unread 09-08-2013, 09:24 PM   #9
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Ditto.

The brake line is conductive, made out of plated steel it is a fine conductor of electricity even when muddy. Rust however is not.

Put the earth straps on to frame, tub and engine and then run out ground wires to the solenoid, alternator, instrument panel, fuel tank etc. These old Jeeps need a better ground path than a rusty bit of steel. AMC saved a few pennies by having half of each electrical circuit run through the steel structure, 30 years later and rust and poor joints play havoc with it.

Not as sexy as wiring the power cables but it will sort out a number of electrical troubles for you before they start.
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Unread 09-08-2013, 09:43 PM   #10
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When I worked as a Volvo dealer tech in the 80's, we had a customer whose Volvo had a faulty throttle cable. After replacing the cable, the car had the same problem shortly after. As it turned out, the engine ground cable was broken and the draw from the starter was heating up the wire of the throttle cable, melting the liner in the cable housing.

If an electrical circuit needs a specific wire size for the power, it needs at least the same amount of load capacity for the ground.

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Unread 09-09-2013, 09:44 AM   #11
pook
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Thanks all for the info problem is all solved. The fuse connector diagram helped a lot.

Now its wired correctly but the clutch safety switch doesn't appear to be working cause nothing happens when I turn the key. The guages come on but when I roll over to start nothing is going to the starter

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Unread 09-09-2013, 10:51 AM   #12
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Thanks all for the info problem is all solved. The fuse connector diagram helped a lot.

Now its wired correctly but the clutch safety switch doesn't appear to be working cause nothing happens when I turn the key. The guages come on but when I roll over to start nothing is going to the starter

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No such animal as a clutch safety switch on Jeep CJ or YJ. Safety switches first showed up on the 1997 Wrangler TJ model.

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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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Unread 09-09-2013, 11:10 AM   #13
pook
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That's what I was thinking but I couldn't find out what year they started making them.

Well guess that means something isn't wired right

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Unread 09-09-2013, 02:33 PM   #14
Mean Max
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Or your starter solenoid isn't grounded.

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Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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Unread 09-09-2013, 03:11 PM   #15
pook
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Wouldn't it technically be grounded by being mounted in place since the blocks grounded?

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