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SpriteSpot.com • View topic - Fuse block and tach question
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Fuse block and tach question

PostPosted: Sun Oct 04, 2009 10:48 pm
by bfleissner
Hi and thanks in advance...

I have a '67 Sprite that as far as I know is stock/original. I've had the car 2 years now. It runs great, starts easy and all that good stuff. But looking under the hood (or am I required to say bonnet?), I see the fuse block and there's only two 3amp fuses total. Straight from the battery to this little fuse block. Can I change it to a 4 fuse block so I can 1) add a radio and 2) hook up my tach.

That's the second part. How (if it's the original tach) does the tach connect? What wires go to what?

And if no one objects, my car has no wipers. It has no holes for wipers and I wouldn't know which switch would control them anyway. Anybody heard or seen this before?>

oh i forgot, the car is neg ground. How do I tell if the tach is a + or - tach?

I can provide pics tomorrow if it would help someone help me.

Re: Fuse block and tach question

PostPosted: Mon Oct 05, 2009 8:10 pm
by admin
Pics would certainly help. Have not seen one without wipers (although it may have been done aftermarket).

You could add additional fuses via a larger block with no problem...although you could also just run a radio without too much difficulty without expanding your fuse block.

Keep us posted with your progresss.

Re: Fuse block and tach question

PostPosted: Mon Oct 05, 2009 9:56 pm
by spritenut
The tach will say "positive earth" on the dial if it is original.
The 67 did only have 2 fuses but they were 35 amp (UK) which is about 20 amp US.
1 fuse works the horn, brown wires.
The other fuse works the wipers, tach, signals, fuel gauge, and brake lights.
White wire fused to green wires.
The tach should have a green wire plugged into a spade terminal, a white wire making a loop around "U" shaped terminal, and it needs to be grounded via the thumb nut that holds it in, there should be a black wire on the thumb nut.

Re: Fuse block and tach question

PostPosted: Mon Oct 05, 2009 11:24 pm
by bfleissner
thanks, that's exactly what I needed to know. I guess my tach has already been swapped out. Now to hook it up. Except for the tach and no wipers (which I don't expect to be an issue since it nevers sees the light of day in dicy weather. The guy who owned it before me had it for 10 years and never had a top for it. I've got the top, just not installed yet), everything else is great. It'll cruise at 70 all day and tops out somewhere around 80 (the speedo wabbles a little at that speed).

It's a '67 with a reverse hinged bugeye hood (I didn't do this but I like it). The hood sheetmetal is wavy, but it's functional until I get around to body/paint work one day. It also came with Rostyle wheels, which don't bother me either. So here's some pics...

The car overall...



The interior....



The wiper-less panel where the wipers should go (no signs of them ever being there)...



The fuse block (there is other wiring with inline fuses in them. still have to sort all of the wiring out, though i'm not in a hurry as it works)



and one with the hood open...



Thanks again for all the info for responding so fast.

Re: Fuse block and tach question

PostPosted: Mon Oct 05, 2009 11:32 pm
by bfleissner
WOW.. sorry for the pics being so big

Re: Fuse block and tach question

PostPosted: Wed Oct 07, 2009 5:27 pm
by bfleissner
well after closer inspection, my tach does say POSITIVE on it's face. What do I have to do to convert it to negative ground as the rest of the car is already negative?

Re: Fuse block and tach question

PostPosted: Fri Oct 09, 2009 11:26 pm
by bfleissner
here's the pics of my tach.. If I have it correctly, a green wire connects to the spade (and I'm not sure where that green wire goes to) and a black wire is on one of the mounting screws as a ground. Do I do anything with the "U" inductive wire after I follow these instructions ( http://www.lotus-cortina.com/electric/convert.htm ). Are those instructions correct for my tach?

thanks again guys