12 Volt Switched Hot For Aftermarket Gauges

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aaustin
Posts: 4
Joined: Wed Aug 21, 2019 8:33 pm

12 Volt Switched Hot For Aftermarket Gauges

Post by aaustin » Thu Aug 22, 2019 11:57 am

Hey Everyone,
Long time reader but first time actually coming to post. I have a 1963 that I am (close to) getting where I want it. A few months ago I got air core water temp and oil pressure gauges with matching senders from Autometer. I could not easily find a 12V switched hot so I made the questionable decision of wiring the gauges directly to the ignition wire (keyswitch to ignition coil) since I knew the gauges would hardly draw any current at all. I knew this was probably not the smartest but it has performed with no issues for about 200 miles. I just got the BOSCH FST 8050 tachometer in the mail and I've decided to clean up my previous gauge wiring with this install. Wondering if anyone knows any good/easy spots for me to tie into? My Thunderbird does not have power seats, windows, AC, convertible top or any of the other factory goodies so no dice there as far as hookups. Also I left out the illumination on the gauges in my initial install, if anyone has any advice on that I could wire that up while I'm at it. Thanks.

stevegintn
Posts: 741
Joined: Sun Jan 10, 2016 1:33 pm

Re: 12 Volt Switched Hot For Aftermarket Gauges

Post by stevegintn » Mon Aug 26, 2019 9:34 am

Austin, back on the main (non-modified) 61-63 forum, I posted about powering for the OEM gauges and another post for powering an electric choke.

Firstly, no idea about your aftermarket gauges, but the stock temp & fuel gauges only use 5v (stepped down from 12 via an IVR, which is behind the clock).

Re powering my electric choke, I moved it from the coil to the power window relay on the firewall (I know you said, you don't have pwr windows). But another guy said he ran the power from the hot wire on the voltage regulator - so that would be an option for you?
Steve G.
'62 TBird HT
'61 TBird HT (parts car)
'88 Ranger XLT
'02 Sportrac 4x4
2012 Dodge RAM 4x4
'49 Ford 8N

aaustin
Posts: 4
Joined: Wed Aug 21, 2019 8:33 pm

Re: 12 Volt Switched Hot For Aftermarket Gauges

Post by aaustin » Sun Sep 01, 2019 7:59 am

Hey all,
Incase anyone needs this in the future I figured it out a few weeks ago. There is a terminal stud/nut on the upper right hand corner of the fuse box that is 12V switched hot, really easy access to run lines off of. Hope this helps someone in the future with wiring fun.

stevegintn
Posts: 741
Joined: Sun Jan 10, 2016 1:33 pm

Re: 12 Volt Switched Hot For Aftermarket Gauges

Post by stevegintn » Tue Sep 17, 2019 11:40 am

aaustin wrote:
Sun Sep 01, 2019 7:59 am
Hey all,
Incase anyone needs this in the future I figured it out a few weeks ago. There is a terminal stud/nut on the upper right hand corner of the fuse box that is 12V switched hot, really easy access to run lines off of. Hope this helps someone in the future with wiring fun.
Austin, is that on a 62? (62 has a totally diff fuse panel and loc than 63)
Steve G.
'62 TBird HT
'61 TBird HT (parts car)
'88 Ranger XLT
'02 Sportrac 4x4
2012 Dodge RAM 4x4
'49 Ford 8N

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