electrical problem on 1991 with 351 ford engine
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=31607
Printed Date: October-08-2024 at 5:14pm
Topic: electrical problem on 1991 with 351 ford engine
Posted By: Keefers
Subject: electrical problem on 1991 with 351 ford engine
Date Posted: September-22-2013 at 7:03am
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does anybody have an electrical drawing of the dash wiring for a 91 nautique ? i am having electrical problems. i have 12v on the red wire at the dash, but the volt light is on. the volts do drop by 2 or 3 tenths of a volt at the switch,so i think that is ok? the alt. is rebuilt and charging. also, when i turn on my navigation lights the voltage drops to 11 volts, and then my perfect pass starts acting flaky. what would cause the volts to drop like that? there is a diode connected to the navigation lights but one side is not connected. i need to know how the diode is supposed to be connected. there is also a little black box mounted under the dash with wires going to it. does anybody know what that is and have a wiring diagram for that? thanks, Keefers |
Replies:
Posted By: 8122pbrainard
Date Posted: September-22-2013 at 10:39am
The basic answer is undersized wire. There are several great threads on up sizing the wire. If you can't find them after doing a search, get back to us and I or one of our members can provide some links. Did you look at the FAQ thread? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Keefers wrote:Posted By: ArtCozier
Date Posted: September-23-2013 at 12:25pm
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Look at the controller for the Temp-Oil-Volt lights. If you look at it so that the plug is at top, are there three little dots of silicone near the bottom? Those are trigger-level adjustments. If that is the type of controller you have, get back to me and I might be able to help you. Art ------------- "Art" |
Posted By: Bri892001
Date Posted: September-23-2013 at 12:43pm
Yup, Perfect Pass hates low voltage. When you get your wiring beefed up, this problem should fix itself.
It should be connected to the output side of both the Nav and the anchor light switch. But, it needs to be facing the right way, you'll have try both ways because I don't think there is any way to tell externally. What this diode basically does, it's like a one way valve. So, when you turn the navigation lights on, it allows voltage to also flow to the anchor lights, which are really on a separate circuit, and bridges the circuits. But, when the anchor lights are on, it does NOT allow voltage to go the other way to the Nav lights. Now, you can do without this diode, but, all it means is when you turn on your Nav lights, you'll have to also flip on the anchor (stern) light manually. Here is the FAQ thread: http://www.correctcraftfan.com/forum/forum_posts.asp?TID=27356" rel="nofollow - http://www.correctcraftfan.com/forum/forum_posts.asp?TID=27356 Here is my thread on adding a new ground and a new positive as well: http://www.correctcraftfan.com/forum/forum_posts.asp?TID=21901&title=added-new-dash-ground-to-93-with-pics" rel="nofollow - http://www.correctcraftfan.com/forum/forum_posts.asp?TID=21901&title=added-new-dash-ground-to-93-with-pics |
Posted By: Keefers
Date Posted: September-27-2013 at 5:40pm
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hi, i want to thank everyone for helping me out. i didn't change the wiring, but i did change and sandpaper the terminals at the start switch and the boat is now showing 13 volts at the volt gauge in the dash. there are some flaky things still going on but i am happy with the results for now. i also wired the diode back in. the anode (arrow side) goes to the navigation lights and the cathode (line side) goes to the anchor lights keefers |
Posted By: Keefers
Date Posted: September-30-2013 at 12:33pm
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yes, that is the type of controller i have. thanks for the info. from left to right,with the plug above, do u know what screw controls what function? and should i mess with them? |
Posted By: ArtCozier
Date Posted: September-30-2013 at 3:12pm
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The plug that I'm referring to is on a flat plastic "box" that is about 3" X 4" X 3/4" and has a whole bunch of wires in it. The "box" will have three "dots" of silicone seal on the same side as the plug. Is that the type of fault reporting box that you have in your boat? It was usually fastened to the underside of the dash panel. ------------- "Art" |
Posted By: Keefers
Date Posted: September-30-2013 at 8:30pm
| yes, that is what i have |
Posted By: ArtCozier
Date Posted: September-30-2013 at 10:24pm
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Good. If you view the box so that the plug is toward you and at the top, the three dots of silicone under it cover the three adjustment screws. The order from left to right is Temperature -- Oil Pressure -- Voltage. You will need a jeweler's type screwdriver with a blade about 1/16" wide. Pierce it through the silicone and "feel" for the slot in the screw. Before you turn the screw, remember this: The adjustment is very sensitive. A very slight turn of the screw will produce a large difference in the level at which it triggers the light. ------------- "Art" |