I've really grown to like these over the past several years for doing older cars that do not support the CAN OBD2
I have two problems wtih them though.
1. occasionally they are really late to wake up the analog output. You can get in a car and within a minute the gauge is displaying what looks like accurate numbers but the analog output is held pretty low (100-200 mv from memory). This can be the case for like 10+ minutes.. then the output wakes up like nothing happened.
---- It seems powering the gauge off the alternator instead of a postive post helps this delay. Sometimes there is no end to the delay.. that is normally how they fail for me.
2. The output just never wakes up.. It stays low even thought he gauge swings very high and low. Getting a new gauge is typically the move here but I'm at the point were I've gone though like 5 of them. Today I had one go bad so I got 2 brand new ones off the shelf and both of the brand new ones will not wake up the analog output either.
What is going on? Is it something I'm missing?