Already anwered you on thaa, but yes I use it all the time.
Wish they had them 30 years ago, a real time and headache saver.
The power up and ground test features are used a lot.
Just connect it once and work your way around the car. Can even use a remote battery.
Just probe the start solenoid wire to crank the starter or bump an engine.
Power up the harness to test for bad bulbs, sockets, wires, connectors.
Test alternator output in 1 second etc.
You just have to start using it to really appreciate all the features.
They have an accessory kit that looks like it would be pretty handy.
Cheapest was on ebay.
BTW, post a pic of the 77 you have
