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1968-Present E-Series Van/Cutaway/Chassis Econolines. E150, E250, E350, E450 and E550

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Old Mar 1, 2018 | 01:35 PM
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Constant Power

On my 1986 e150 the dash lights and clock stay on when the ignition is off and the battery keeps dying if it sits for more than a day. If I disconnect the battery it will hold charger. Any ideas as to the cause... I am thinking a bad relay somewhere.
 
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Old Mar 1, 2018 | 02:08 PM
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When you say dash lights are you talking about (if you don't have gauges) the oil, temp, alternator, or the actual lights that illuminate the dash?
 
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Old Mar 2, 2018 | 10:29 AM
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one more question. if you are talking about the warning lights, is your fuel gauge dropping to E or staying in position indicating you have fuel in the tank? I ask because the temp, fuel, and oil are fed from the same accessory circuit on the ignition switch down on the steering column. The clock also has a feed off of the ignition switch. If you are talking about the dash illumination lights, they are fed from the headlight switch.
 
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Old Mar 2, 2018 | 06:41 PM
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Sorry, for the unclear information. Its is the clock and the gauges that stay on. 10% of the time the clock and gauges will de energize when the ignition is turned off... The rest of the time they stay on and kill the battery.
 
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Old Mar 2, 2018 | 07:46 PM
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Thats ok... The gauges are also powered from the ignition switch except (I think)) the charging gauge which still has a circuit going through the switch.. Does your charge indicator gauge go to normal while the others stay on?
Anyway,, I believe your problem is in the ignition switch down on the column. It could be bad or it could just out of adjustment.
If you don't have a manual and plan n keeping the van then I recommend you pick up a Ford service manual like this one. These are much better then any book from the parts store. Te only complaint I have heard from some is that some of the CD's don't want to work on newer operating systems. I am cheap and my desktop and laptop still use win7. I use the manual for my 85 and 88 e150 and it works fine..
https://www.ebay.com/itm/FORD-1986-B...485526513#rwid

Here is an example of the info in these Ford manuals

If you wind up needing a switch,, here is a Motorcraft OEM switch. You can find a cheaper one probably at the parts store but I find most aftermarket parts to be really sad these days.. Also if it is your only means of transportation I might recommend having a switch on hand or means to go get one as they have been known to come apart.. BUt as I said earlier it may just be out of adjustment...
https://www.ebay.com/itm/Motorcraft-...4383.l4275.c10
 
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Old Mar 2, 2018 | 07:49 PM
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