Isuzu Trooper Owners Club UK™

[Yoshi]

The triangular plastic panels on Trooper doors are often prewired for tweeters,they just pull off so it's easy to check,and they do make a difference.
Take the panel into the shop with you though,and make sure the speakers you choose are slim enough to fit,the depth of the panel is all the room you get.
A Dremel is dead handy for making the holes,again,watch you have space behind,and be prepared to take the Trooper connector plug apart to get at the wires if you can't find matching ones for your speakers.The leads are already live so don't short them out once you bare them...
Job done!

[Google]