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Passenger side behind the battery....
See the yellow wire in the grey connector, look at that connector very carefully. There are actually two wires in the connector, but you only have to be concerned with the yellow one.
If it looks like it has been overheated you probably are loosing power there.
I had to splice the wires and eliminate the connector on my truck several years ago.
It acted just like you are describing.
But if you have a bad ground, your batteries may not be charging, they could also be the problem.
If you ever have your batteries load tested in the truck, you must remove the ground cable from one of the batteries while testing. No tester around can test two batteries at the same time. I have seen a dual battery setup test good with both batteries hooked up. When they were tested individually both batteries were junk.
The kids at the auto parts stores are not trained to test dual battery setups, the are trained to test single battery cars. They all think that it does not make any difference if both batteries are hooked up when the test them. A 650 amp car and one of these trucks with 1700 amps or more in the batteries are not the same animal.
Are you sure it has something to do with the solenoid Dave?
That picture is of an older truck, the glow plug solenoid just happened to be near that wire.
The wire does not attach to the solenoid, and on you 89 you will not have a solenoid there anyway.
But you will have the yellow wire and the connector although the connector may be a different color.
The one on my 86 was black. It was also melted rather severly.
Cut the wire on each side of the connector and spliced it back together, that has been 5 or 6 years ago and not one problem since.
Well guys, I got fed up and brought it to the mechanic...turns out the ford dealership did a **** pour job of tightning the bolt on the BRAND NEW cable that I bought from them which THEY had installed. When I get back into town, I'm gonna rip that ***** a new ******* who screwed me over for labour and purposely screwed with my truck so that i'd spend more money on them trying to fix it. I'm so pissed at this, I cant believe som as*hole would want to do that to someone. Those guys even quoted me 300$ JUST for the hoses and said that both my lines had holes in them. Canadian tire said that there was a hole in only one of the high pressure hoses, and they said it'd be 180$ installed. Go figure eh? I think I have every right to go and rip that guy's head off at the Ford dealership.
well.....you might as well put the low pressure side on as well. they may be seaping and the leak you have is just "masking'' that,besides your already doing the expensive line; the low side should be a whole lot less. esspecially since the mech. is already there
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