The Sunpro gauges works good? Have you used these? "Sunpro Analog StyleLine Gauges CP8218" in Summit... I bought it recently, but the electrician mechanic told me that the voltage gauge doesn't work good because if there are some short circuit could damage all wires or something behind the dash. Do you know something of this? I would appreciate your help! Thanks!
Those gauges should work fine. Be sure to install a 5A fused circuit for the voltage gauge. That will give you plenty of protection in case the voltage gauge fails.
I have read horror stories about AMP gauges burning up wiring/cars. The direct reading vintage analog type dash mounted amp meter requires hookup wires sufficiently large to carry the full current in the circuit being monitored. A 30 amp meter would need a pair of 10 gauge wires. A 60 amp meter would need 8 gauge wires. A 100 amp meter would need 6 gauge wires. These wires have to run through the passenger compartment behind the dash to get to the meter. One of these wires will be a direct connection to the vehicle battery with almost unlimited current output capacity, and the wire will be unfused. If this wire should at any time for any reason incur a short circuit to chassis ground, the result would be something like burning off a welding rod with the only limit to current being the resistance of the wire (which is virtually zero ohms) and the internal resistance of the battery (which may be only a few milliohms). As such, this large unfused hookup wire represents a personal safety risk (fire or burn hazard), so you need to be very careful to protect the wire from damage, and proper bulkhead grommets are first order of the day.
OMG is good to know it, I dont knew nothing about it! Im going to check very well because the technician told me something like that, but he made an enphasis in the conectors behind the Volt meter maybe that could make a short circuit, he said "it have a low quality" (idk how to say in english... when something is cheaper and low quality?). Again Thanks!!
