Got my tach working but I dont know what wire to splice into to get my light to work. I shoved it into the light fuse in the fuse box but the light constantly stays on
. Thanks for the help
. Thanks for the helpLight wire on Tach Help
- Thread starter gcwh02
- Start date
update: now I got a problem. I got all the wires wired up except the light wire. I start the car, and the needle stays at my shift point. But my stock tach still works. I have one to the ground, one to the neg. side coil, and another to the power in the fuse box.
Fuse 13 is dimmed. You can connect the lighting wire to the dead side of the fuse.
Make sure the wire to the negative side of the coil has a good connection. Air core tachs act funny when they dont get a decent signal.
Good luck.
Make sure the wire to the negative side of the coil has a good connection. Air core tachs act funny when they dont get a decent signal.
Good luck.
thanks guys, good info. Hissin, so it sounds like a coil connection problem? The wire was too short to reach the coil so I had to splice in another wire to make it reach, would that be a problem also?
No problem at all with using a splice - in my experience anyhow. I had to do the same for my AM tach (mine's real plain though - no light or nothing).
I'd just give it a quick check and make sure the connection is secure, as chances are that this is the source of issue. The connections do need to be pretty clean because the negative side of the coil pulses a zillion times a minute and the tach 'counts' these.
Good luck.
I'd just give it a quick check and make sure the connection is secure, as chances are that this is the source of issue. The connections do need to be pretty clean because the negative side of the coil pulses a zillion times a minute and the tach 'counts' these.
Good luck.
Oh yea, i forgot to mention. I have a MSD 6AL and coil (not sure if it has to be connected to the box instead). Like I said, Im a wiring noob:SNSign:
Per MSD, I do believe that the tach should go to the tach terminal on your box, like you said. I have seen folks in here say they didnt but I'd do it at the box, especially since you're having issues.
Good luck.
Good luck.
04sleeper
Founding Member
The MSD has a Tach signal output. Thats what you need to hook up to.
As far as the illumination wire, you can use the dimmed fuse like JT mentioned. It is easy to find as it is the only 5 amp fuse in the fuse panel.
As far as the illumination wire, you can use the dimmed fuse like JT mentioned. It is easy to find as it is the only 5 amp fuse in the fuse panel.
I got the tach to work, thanks a lot guys. One problem, I cant get the light to work. I shoved the wire in fuse 13 (dimmer) and its not working for me. Any other options besides splicing into the dash lights?
04sleeper
Founding Member
Did you test both sides of the fuse with a light tester?
You want to hook it up to the side that does not have power with the fuse out.
Remember, that fuse will not show power until the light switch is turned to the ON position.
You want to hook it up to the side that does not have power with the fuse out.
Remember, that fuse will not show power until the light switch is turned to the ON position.
Both Kevin and Brin got ya covered.
Whenever you don't get the desired result with something like that, do as mentioned above and whip out the test light and trace the pathway from your tap at the fusebox towards the gauge.
Chances are either the splice into the fusebox was bad or that the wiring connection at the gauge socket (where you spliced into the little leg of wires they supply) is bad.
If that whole run of dimmer wire to your gauge is good, do the same test with your gauge light's ground.
Should take a couple minutes to find and fix.
Good luck.
Whenever you don't get the desired result with something like that, do as mentioned above and whip out the test light and trace the pathway from your tap at the fusebox towards the gauge.
Chances are either the splice into the fusebox was bad or that the wiring connection at the gauge socket (where you spliced into the little leg of wires they supply) is bad.
If that whole run of dimmer wire to your gauge is good, do the same test with your gauge light's ground.
Should take a couple minutes to find and fix.
Good luck.
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