wiring harness - tan wire with purple stripe

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willxuout2

Seaman
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Nov 19, 2003
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What is the tan wire with the purple stripe that runs to the main red plug that connects to the boat's wiring harness?<br /><br />The wire was cut by the previous owner.<br /><br />Thanks for the replies.
 
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ob

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Re: wiring harness - tan wire with purple stripe

What engine?Sounds like an overtemp sensor wire.Tan/blue
 
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willxuout2

Seaman
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Re: wiring harness - tan wire with purple stripe

96 evinrude ocean pro 225hp v6 looper<br /><br />The wires from the top of each bank of heads are tan with a black stripe. there is a white wire with a black stripe coming from the top port head to powerpack.<br /><br />the wire that has been cut is were the motor wire harness plugs to the boat's wire harness. this wire is tan with purple stripe.<br /><br />I disconnected the bullet type connector and stuck a screwdriver in the end that comes from the powerpack and grounded it to the block and there was no warning horn. the key was in the on position with the motor not running. It did peg my temp gauge. I had to disconnect the gauge to reset it.<br /><br />maybe it didn't sound because of the wire that is cut at the red plug connection?
 
clanton

clanton

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Re: wiring harness - tan wire with purple stripe

If it is a tan wire, most likly is a alarm wire, there is 4 wires that should go to the System Check tach, overheat, fuel restriction, low oil , no oil. None of these wires should go to a temp gauge, unless someone cut and rewired the system. If I can remember I will check manual for colors tomorrow.
 
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willxuout2

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Re: wiring harness - tan wire with purple stripe

Clanton,<br /><br />I premix, so if the tan/purple wire is for the oil sensor to the vro then that is o.k.<br /><br />My concern is that when i tested for the overheat warning horn i didn't get a sound when i grounded the tan/black wire that comes from either side of the powerpack. the key was in the on position. did i test the overheat right?<br /><br />thanks
 
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ob

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Re: wiring harness - tan wire with purple stripe

You tested them right.Alarm should have sounded.If you are using premix ,is the four wire lead from VRO pump disconnected at the amphenol plug ? It should be ,along with the two wires from the oil reservoir low level alarm.As for the tan/purple wire,hopefully someone else can shine some light.<br /><br />My 96' engines 4 wire vro alarm leads have a purple wire and a tan wire ,but no tan/purple wire.<br /><br />Have you tried reconnecting the tan/purple wire and test alarms?<br /><br />Do you get the short tone from your alarm system when you initially turn the key to the "on" position?
 
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willxuout2

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Messages
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Re: wiring harness - tan wire with purple stripe

OB:<br /><br />I do get a short tone from the warning horn when i turn the ignition on. I'll have to trace the tan/purple wire back and let you know where it connects.<br /><br />I did test the fuel restriction sensor by drawing a vacuum on the fuel line before the vro. The horn sounded.<br /><br />I'll try testing the s.l.o.w. and the overheat again per the clymers manual this weekend and get back to you with the results.<br /><br />Thanks.
 
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seahorse5

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Re: wiring harness - tan wire with purple stripe

'96 and later models with the 4-lite system check gauge will not sound the horn with the key ON and the motor not running, only the lite will come on. If you want to test the whole system, ground one of the tan wires while the motor is operating and you should see a lite come on and the warning horn sound for about 10 seconds.
 
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willxuout2

Seaman
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Re: wiring harness - tan wire with purple stripe

Hey OB and Seahorse:<br /><br />1. Forget about the tan/purple wire...it's coming from the boat's wiring harness...not the engine harness.<br /><br />2. I tested the fuel restriction warning horn about 6 months ago with the key in the on position and the motor not running...it sounded.<br /><br />3. Seahorse, I am familiar with the light gauge setup for those motors. Mine is not fitted with that setup. All I have is the warning horn.<br /><br />4. I re-tested the overheat and fuel restriction and the worning horn didn't sound. The horn does sound when I turn the key on...one short beep to let you know the horn works.<br /><br />5. The manual says that if the horn sounds for the self test and not the others then there is a couple of possible causes.<br /><br /> a. open circuit on the tan lead<br /> b. blocking diode failure<br /> c. horn may be bad (not likely if self tests)<br /><br />How would I test for the open cicuit? I traced the tan wire from the motor to the control box and it is all connected. Reseated the big red plugs along the wiring harness. Where is the blocking diode?<br /><br />Thanks for you patience.
 
clanton

clanton

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Re: wiring harness - tan wire with purple stripe

Tan wire is for overheat, tan/yellow stripe for VRO pump, tan/orange stripe fuel restriction V6 only I think, tan/black stripe VRO remote oil tank. The short pigtails on the overheat sensors may be tan /blue stripe depending on engine model.<br />The blocking diode is in the tan wire in engine harness, work backward from the main red plug, about 18/29 inches from red plug.
 
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willxuout2

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Re: wiring harness - tan wire with purple stripe

Got a question. If the kill switch landyard is pulled so the motor won't fire :rolleyes: , will the horn not sound when I test for the overheat and fuel restriction not sound?<br /> :confused: <br />Thanks
 
clanton

clanton

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Re: wiring harness - tan wire with purple stripe

kill switch should not have anything to do with warning horn. Also if your engine has a large red harness connector that sorta looks like a primer bulb, it should only have one tan wire going farward to the control. Without seeing your boat wiring its hard to comment, but you have a 96 engine that should have had a System Check engine harness, which was adapted to an older boat harness, and the harness may not be an OEM harness, which would explain the tan wire with purple stripe. You see colors OK? You want a diagram of whats on the engine and what I guess is in the boat, in living color by mail. I could make a service call, I sometimes go to Crystal River, was there Sat.
 
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willxuout3

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Jan 21, 2004
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Re: wiring harness - tan wire with purple stripe

thanks clanton. i took it to the dealer today :eek: <br /><br />we'll see what kind of damage they'll do.<br /><br />next time i'll give you a ring...i wasn't aware you made house calls :D <br /><br />i'll let you know the results in a couple of weeks.
 
clanton

clanton

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Re: wiring harness - tan wire with purple stripe

You by chance work at the company that builds the fire trucks?
 
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willxuout2

Seaman
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Nov 19, 2003
Messages
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Re: wiring harness - tan wire with purple stripe

UPDATE:<br /><br />mech replaced warning horn. I now get a continuous tone when grounding the temp sensor wires tan/black at the motor.<br /><br />the old warning horn used to self test when turning the ignition key on. no more. i pulled the control cover and the type of warning horn is different. it only has two wire connections...purple and tan/blue. the old one had three connections....black and purple and tan/blue.<br /><br />I am assuming that the guy who installed the new horn forgot to splice in the wire from the ignition switch. sometimes you have to wonder. :rolleyes: <br /><br />I guess i'll have to check the horn once and awhile manually.
 
clanton

clanton

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Re: wiring harness - tan wire with purple stripe

The horn should self test. If you are not using a System Check tach, with the 4 red lights, the horn is probley the incorrect horn.
 
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