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Electric Air gage hookup problem

This is a public forum to discuss Eagle related technical issues. If you are having a problem with your Eagle, this is the place to find help.
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proudeagle10
Club Member
Club Member
Posts: 161
Joined: Sat Sep 05, 2009 7:07 pm
FMCA #: 142221
Bus Model: Pipe Creek, TX
1980 model 10
DD 8V71 Allison 740
S B Hyd. Shiftier
Location: Pipe Creek, TX

Electric Air gage hookup problem

Post by proudeagle10 »

I've got a new Eagle electric air gage. Aside from the light hookup, it has 3 wires going to it (power [red]-black [grn] and sender) without connecting the to the gage, and only connecting the red (power) and ground, the gage goes off scale high. Same when I connect the . Have tried two gage with the same results. Can anybody help out on this? AL
PS. 81 Eagle model 10
AL Moreno
proudeagle10
1980 Eagle 10
DD 8V71 Allison 740
S B Hyd. shiftier
User avatar
Dreamscape
Posts: 3046
Joined: Mon Oct 13, 2008 1:03 pm
FMCA #: F391238
Bus Model: 1968 Silver Eagle Model 01
Location: Full Timing - On The Road

Re: Electric Air gage hookup problem

Post by Dreamscape »

Connect the sender to see if it will work.

Paul
Paul Lawry
Dreamscape
1968 Eagle 01 #7443
Silver 8V92 HT 740

Dreamscape Build Blog: https://dreamscapesilvereagle.wordpress.com/
proudeagle10
Club Member
Club Member
Posts: 161
Joined: Sat Sep 05, 2009 7:07 pm
FMCA #: 142221
Bus Model: Pipe Creek, TX
1980 model 10
DD 8V71 Allison 740
S B Hyd. Shiftier
Location: Pipe Creek, TX

Re: Electric Air gage hookup problem

Post by proudeagle10 »

Hey Paul
It goes off scale high only when the ground is connected. If I leave the ground disconnected and the power and sender connected noting happens. The gage will not work.
Thanks AL
AL Moreno
proudeagle10
1980 Eagle 10
DD 8V71 Allison 740
S B Hyd. shiftier
User avatar
Dreamscape
Posts: 3046
Joined: Mon Oct 13, 2008 1:03 pm
FMCA #: F391238
Bus Model: 1968 Silver Eagle Model 01
Location: Full Timing - On The Road

Re: Electric Air gage hookup problem

Post by Dreamscape »

Are you replacing an older gauge? Or is this a new installation? I do know the gauge has to be for the sender type/model number, otherwise it will not work. I'm assuming when you hooked up the power it had 12v, correct? I'm just trying to get a feel for what you did and what is going on . Give all the details you can please. It's pretty hard to troubleshoot electrical without seeing it. Most of the time I've seen gauges that did that it was not grounded, or the wrong sender for the gauge.
Paul Lawry
Dreamscape
1968 Eagle 01 #7443
Silver 8V92 HT 740

Dreamscape Build Blog: https://dreamscapesilvereagle.wordpress.com/
proudeagle10
Club Member
Club Member
Posts: 161
Joined: Sat Sep 05, 2009 7:07 pm
FMCA #: 142221
Bus Model: Pipe Creek, TX
1980 model 10
DD 8V71 Allison 740
S B Hyd. Shiftier
Location: Pipe Creek, TX

Re: Electric Air gage hookup problem

Post by proudeagle10 »

Paul the two gauges, I got from Jefferson Truck and are suppost to be the right ones. I don't know.
The power is 12 dcv. The gauge goes off scale,(with the ignition swith on) as soon as I connect the power and the ground wires on the gauge. With or without the sender wire connected. The power wire to the + and the ground to the - and the sender wire to S. This thing has got me baffle. I think what I'll do, is do some wire chasing again.
Thanks AL
AL Moreno
proudeagle10
1980 Eagle 10
DD 8V71 Allison 740
S B Hyd. shiftier
van
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Posts: 1437
Joined: Mon Oct 13, 2008 1:35 pm

Re: Electric Air gage hookup problem

Post by van »

Have you checked the sender it's self?
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