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Ok, I have searched the old posts a bunch of times but still cannot find an answer. I just bought an OER tic toch tach for my 68 and I am going to install it in place of my fuel gauge. I know I will need to get console gauges or another fuel gauge, but that is later. Right now I need to install the tach. I did not buy a circuit board for it because I have an HEI and the place I bought it from said I did not need to get a circuit board. So, on the back of the tach there are I think four posts. One red (12 volts i think), one black (ground?), one orange, and one blue. One has to go to the HEI and the other will go to the lights. Where is the best place to the make the conncetion for the light. Will the blinker light and dash light still operate off of the circuit board? I haven't taken the cluster out yet and the tach is still in the box.
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Discussion Starter #2
Please, any help is aprreciated. I just need to know if I can use muy existing circuit board and how to wire it. I have searched everywhere for OER 1968 tic toc tach installation.
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If you're looking just for a place to connect the wire that goes to the lights, then the fuse box has provisions for that, in a way of a male spade terminal coming out of it and marked LPS (lamps).
**But related to mounting the tach without the appropriate printed circuit, be carefull cause they are different. In the photo bellow appears the printed circuit for tach. If you look at it, you'll see a hole where the tach goes. In the non tach one, there are four holes with connections going to certain places in the car's electrical system. I'm not saying that it can't be retrofitted with that non tach crkt, but make sure you isolate the tach connections from the existing ones to avoid any short.
I did not buy a circuit board for it because I have an HEI and the place I bought it from said I did not need to get a circuit board.
The way your supplier told you, It should be like installing any other aftermarket tach, so IMO you need to keep it appart from the rest of the circuits of the dash and don't forget to install an inline fuse.
 
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