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Old 20-03-2006, 08:48 AM   #1
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Merc Wiring

What colour wire is the overheat light in the merc loom?
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Old 20-03-2006, 09:07 AM   #2
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fawn/blue i think, TD will know for sure
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Old 20-03-2006, 09:10 AM   #3
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Think its Tan/Blue (pin 3) on the plug.
Remember I'm out of date

Edit: fawn??????? you been watching Bambie at the weekend
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Old 20-03-2006, 09:14 AM   #4
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I thought it was brown, thats why i asked
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Old 20-03-2006, 09:29 AM   #5
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Thought brown was the temp sender where as Tan/Blu was the O'heat.
Wheres a JBD when you need him
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Old 20-03-2006, 10:01 AM   #6
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Quote:
Originally posted by BluFin
Thought brown was the temp sender where as Tan/Blu was the O'heat.
Wheres a JBD when you need him
He didn't know thats why i posted the question
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Old 20-03-2006, 10:18 AM   #7
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This confused me yesterday, I plugged the temp guage into the tan/blue wire and the o/heat buzzer went off (without the engine being started!).
I guess tan/blue must be the o/heat and brown the temp guage.
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Old 20-03-2006, 10:36 AM   #8
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Quote:
Originally posted by BluFin
Edit: fawn??????? you been watching Bambie at the weekend
Fawn, Tan, ..whatever, you knew what I meant.
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Old 20-03-2006, 11:35 AM   #9
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Quote:
Originally posted by Jon Fuller
Fawn, Tan, ..whatever, you knew what I meant.
woops ! Just playing.

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Happend once told somebody the codes for I think it was 10 Base Network Plug. He never even had a clue he was till then.
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Old 20-03-2006, 04:47 PM   #10
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so is tan / fawn brown then
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Old 20-03-2006, 05:09 PM   #11
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tan/brown are warning leads,they warn when something is out of order.
there are more tan /brown ,on a stock merc,they warn for oil failure,temp.
tan is a water temp swich

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Old 20-03-2006, 06:35 PM   #12
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right, well i found the tan blue wire and touched it on block and yippee the overheat buzzer sounded.

how ever i then wired it to my senders and now the buzzer sounds all the time
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Old 20-03-2006, 06:41 PM   #13
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maybe this will help
Attached Files
File Type: zip wiring.zip (55.3 KB, 122 views)
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Old 20-03-2006, 07:52 PM   #14
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Quote:
Originally posted by Burty
He didn't know thats why i posted the question
I told you brown so I was halfway there, in fact as its only a blue stripe on a brown wire I reckon I was over halfway right!!!

Quote:
Originally posted by Burty
right, well i found the tan blue wire and touched it on block and yippee the overheat buzzer sounded.

how ever i then wired it to my senders and now the buzzer sounds all the time
Check the brown wires from the snap switches are isolated from earth, maybe one of them is faulty.

Also check where the feed is taken from at the dash end cus mine used to do that and it turned out that the feed had been taken from the back of the rev counter but had been connected to the signal rather than the 12V and as a result it was floating around all over the shop and causing the buzzer to go off spuriously.
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Old 20-03-2006, 11:02 PM   #15
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Quote:
Originally posted by Johnny Boat Dude
I told you brown so I was halfway there, in fact as its only a blue stripe on a brown wire I reckon I was over halfway right!!!



Check the brown wires from the snap switches are isolated from earth, maybe one of them is faulty.

Also check where the feed is taken from at the dash end cus mine used to do that and it turned out that the feed had been taken from the back of the rev counter but had been connected to the signal rather than the 12V and as a result it was floating around all over the shop and causing the buzzer to go off spuriously.
worked before
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Old 20-03-2006, 11:15 PM   #16
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Must be a faulty snap switch then I guess maybe you've damaged one of the wires somewhere. As I said check the isolation between the switch wires and earth.
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Old 20-03-2006, 11:22 PM   #17
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Quote:
Originally posted by Johnny Boat Dude
Must be a faulty snap switch then I guess maybe you've damaged one of the wires somewhere. As I said check the isolation between the switch wires and earth.
I've damaged it!!!! You fekkin fitted it
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Old 20-03-2006, 11:31 PM   #18
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I didn't run the wires nob cheese
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Old 20-03-2006, 11:58 PM   #19
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well if you short the tan/ blue wire to the block it works fine
its only when connected to snap switches its bust
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