temp gauge

MercBlackMax1

Seaman Apprentice
Joined
Dec 16, 2011
Messages
48
Hey does the temp guage usually connect to the inside or the outside ouf the block on a merc black max 200??

when i plug it up to the outside i get a reading on my gauge with the key on
when i plug it to the inside of the block i get a reading with the key off
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,618
Re: temp gauge

Is it a OEM gauge or aftermarket??? Which sender do you have on the heads?? It will use the tan with blue stripe wire and must have the a screw in sender.
 

aussieflash

Lieutenant Junior Grade
Joined
Feb 5, 2011
Messages
1,004
Re: temp gauge

Inside head sender is set to 240 deg and 15 1/2"wire lead.outside 190 deg.and 18 1/2"wire lead.
 
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