Fuse box question

[Markus]

I recently hooked up a couple items, CHT gauge and a electrical window washer fluid motor. I want to put in a volt gauge and also fog lights eventually but i have run out of open terminals on the back of the ignition switched fuses. I have open terminals for the constant 12V fuse (hazard lights, dome lights) but dont want to use those.

Can I just use a piggy back blade connector (not sure if thats what they are called) or splice into an existing wire? will I be overloading something if i do this? any other options?

also the CHT gauge is the good one from dakota digital. anyone else running one on a late bay? I have mine on the #3 spark plug. It seems accurate because stone cold when i turn the key it will read like 80 something degrees. On these hot days it warms up quick (Ihave a new thermostat w working parts). I havent been on the highway for more than 2 miles so far and I'm seeing a max of 375F and mostly getting up to 350ish around town. anyone have info on what temps are normal?

[ObnoxiousBlue]

My electric washer pump is on the same fuse as the wiper motor. it was simple because everything is already on the one stalk. There is a step-by-step on how I modified the factory pneumatic actuated washer switch to be electric. Asd for the CHT, it isn't going to pull alot of power. You should put it on the same line as something else in the instrument cluster just to make it simple to trace later on if there is ever an issue. Fog lights will have to be wired to a relay, so you may as well run a hot leg to the relay right from the battery.
Your voltage meter should likely be wired directly to the battery too. I wouldn't run it to the fuse box, because if you do have a problem down the line, it will be difficult to identify any issues as battery or fuse box related unless the two are isolated.

[Markus]

Fog lights are def running through a relay so ok i will run them through a hot all the time fuse.

I really didnt want to run a line back to the battery for the Volt meter. I figure if a fuse goes and i lose voltage i can just check whatever other systems run through the fuse. Its true there is some voltage loss if I run it through the fuse box but i would use the guage to relatively keep an eye on Voltage drop/lack of charging. I dont need to know the exact voltage. When my alternator was having issues last year it would have come in handy.

the CHT gauge is already installed and hooked up on a switched line.

I was wondering if its safe to use these guys to create 1 or 2 more open terminals:

http://www.allbatterysalesandservice.co ... ,8836.html