Sure can if u know how to do it.

Is easy for VS.
A bit difficult for GC because some points not easy to reach.
Not easy for VE, need to know the step. Because dealing with alternator positive to battery positive.

So which model u interested? What car model using?

have to remove battery positive connector before start. car key remove as well.

Connect the same point as original positive out from alternator, then connect to the connector.

Lastly connect the connector to battery positive terminal.

looks simple right? 

but not all car alternator easy to access. if can lift up then save a lot of time. also need to be-careful during installation.
gentle reminder for new car. if you plan to claim something .. VE not easy to remove. if VS easy 

we got kancil with BT502 and Camry with entry level.

all happy user 

some users will keep on upgrade, some not.

the most important thing are what is your budget and what is your expectation 

Even highest model BT 502 also can upgrade 

but is not timing to share here. that's a add on for BT 502 user only 

Edge BT 502 = RM1420.00

seriously? direct highest model without try

BT502 is highest model, user can't upgrade so no 2nd hand 

actually we provide 2 weeks money back offer for entry level VS. the only condition is you must drive your car to run in at least 10 hours. More hours run in more effect you can experience. 

Recently my Alza upgrade to little giant v2. so my own 400+ hours entry level transfer to  Saga LMST.

and the entry level in Saga LMST (only 1 months+, 10 +hours run in) transfer to paper box 
hm... how much deposit (refundable) I shd collect for trial 

not really 2nd hand. is my own unit label May or Jun 2013.

front page post 2 or 3 got 2nd hand selling, not sure still available or not. (post for my client)

you can come to me if really want to test the entry level 

then no choice you have think 1st 

buy entry level, test and happy then transfer to other car / sell to friend. or buy highest model directly 

sorry ah. my unit not for sales 

you may ask the LYN former, contact at front page. He plan to upgrade.